determine if 2.5/10=12/48 or 2.5/2=12/24 is proportion

Answer 1

To determine if two ratios are proportional, we can cross-multiply and check if the products are equal.

In the first case, 2.5/10 = 12/48:

Cross-multiplying: (2.5)(48) = (10)(12)
120 = 120

Since the products are equal, we can conclude that the ratios are proportional.

In the second case, 2.5/2 = 12/24:

Cross-multiplying: (2.5)(24) = (2)(12)
60 = 24

Since the products are not equal, we can conclude that the ratios are not proportional.

Therefore, only 2.5/10 = 12/48 is a proportion.