Question

Select the pairs of ratios that form a true proportion. Choose all that apply A 3: 6 and 5:10 B 4/12 and 6/18 C 20/5 and 10/3 D 24: 36 and 8: 9

Answer 1

The only grouping that is a true proportion is B.

Explanation:

To tell if two are proportional, simply multiply the numerator from the first by the denominator of the second. Then multiply the denominator from the first and the numerator for the second. If the two products are the same, then it is proportional.

B) 4/12 = 6/18

4*18 = 12 * 6

72 = 72