IXL | Do the ratios form a proportion: word problems

Do these ratios form a proportion?

8 units : 20 years

4 units : 18 years

yes

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Learn with an example

Do these ratios form a proportion?

12 tenors for every 14 basses

6 tenors for every 7 basses

yes

A proportion is a statement that two ratios are equivalent to each other. Two ratios form a proportion if their cross products are equal.

Write the ratios as fractions.

and

Compare the two fractions to see if they are equivalent.

12 × 7

14 × 6

Multiply both sides by 14 × 7

Simplify

The cross products are equal, so the ratios form a proportion.

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