Asked by sans the skeleton

Which pair of ratios forms a proportion? (4/5 10/13), (7/8 15/18), and (1/2 14/28)
Answered by my_crafting
a proportion is a part of a whole
so which ones can you change the denominator to make them fit together?
Answered by sans the skeleton
a part, share, or number considered in comparative relation to a whole
Answered by Goat mom
knowing that which is your answer?
Answered by sans the skeleton
4/5 10/13
Answered by sans the skeleton
idk im bad at this
Answered by Goat mom
Well can you multiply 5 by any hole number to = 13? can you divide 13 by any hole number to = 5?
Answered by Ms. Sue
4/5 does not equal 10/13.
Multiply both the numerator and denominator by the same number.
4/5 * 2 = 8/10
4/5 * 3 = 12/15
Answered by sans the skeleton
5 can create 10 but 4 can not mak 13
Answered by Ms. Sue
Goat mom -- I think you mean whole number.
Answered by Damon
what is 2 * 14 ?
Answered by DrBob222
Why not get down to the problem?
Is there a whole number that multiplies by 4 and 5 to make 10 an 13?
Is there a whole number that multiplies by 7 and 8 to make 15 and 18
Is there a whole number tha tmultiplies by 1 and 2 to make 14 and 28?

If yes, there is a proportion. If no, there isn't. For example,
look at the pair of 2/3 and 8/12. If we multiply 4 x 2 we get 8 and 4 x 3 = 12 so the pair of 2/3 and 8/12 is a proportion.
Answered by Bosnian
1st / 2nd = 3rd / 4th

( 4 / 5 ) : ( 10 / 13 ) = 4 ∙ 13 : ( 5 ∙ 10 ) = 52 : 50 = 2 ∙ 26 : 2 ∙ 25 = 26 / 25

( 7 / 8 ) : ( 15 / 18 ) = 7 ∙ 18 : ( 8 ∙ 15 ) = 126 : 120 = 6 ∙ 21 : 6 ∙ 20 = 21 / 20

( 1 / 2 ) : ( 14 / 28 ) = ( 1 / 2 ) : ( 14 / 14 ∙ 2 ) = 1 / 2 : 1 / 2 = 1
Answered by Henry2
A proportion is an equation that says 2 ratios are equal.
Proportion: 1/4 = 2/8; We know this is true , because 2/8 can be reduced to
1/4.
So 1/2 = 14/28, because 14/28 can be reduced to 1/2.
Answered by MathMate
Another way is to cross multiply.
Multiply one numerator by the denominator of the other. Repeat for the other numerator. If the products are equal, they're in proportion.
Example:
<b>4</b>/6 : 8/<b>12</b>
<b>4</b>(numerator) * <b>12</b> (other denominator) = 48
8(other numerator) * 6 (this numerator) = 48
so 4/6 and 8/12 are proportional.
Answered by MathMate
Second line in example should read:
8(other numerator) * 6 (this <i>denominator</i>) = 48
Answered by sanes the underman
*Megalovania intensifies*
There are no AI answers yet. The ability to request AI answers is coming soon!