properties of proportions

definition and example

1 answer

The property of proportions states that two ratios are equal, and this property can be used to solve for unknown values in a proportional relationship.

Here is an example: Let's say that 5 apples cost $2.50. We can express this relationship as a ratio:

5 apples / $2.50 = x apples / $5.00

Using the property of proportions, we can cross-multiply and solve for x:

5 apples x $5.00 = $2.50 x x apples

25 = $2.50x

x = 10

Therefore, 10 apples would cost $5.00, and we were able to solve for this unknown value using the properties of proportions.