To make the ratios proportional, you need to find the missing denominator in the second ratio.
The given ratio is 21/3 = 49/?
To find the missing denominator, you can use the cross-multiplication method. This involves multiplying both sides of the equation by the denominators from the other side.
Cross-multiplying the given ratio:
(21) * (?) = (3) * (49)
The equation becomes:
21 * ? = 3 * 49
To find the missing denominator, divide both sides by 21:
? = (3 * 49) / 21
Simplifying the right side:
? = 147/21
Therefore, the missing denominator that would make the ratios proportional is 147.
what denminator for 21/3=49/? would make these ratios proportional?
1 answer