Determine which set of ratios forms a proportion.

Question

This question requires you to show your work.

(1 point)
Responses

5:10, 20:40
5:10, 20:40

1:16, 3:18
1:16, 3:18

9:10, 45:40
9:10, 45:40

1:8, 2:18
1:8, 2:18

Answer 1

To determine if a set of ratios forms a proportion, you can cross multiply and see if the products are equal.

5/10 = 20/40
Cross multiplying:
5 x 40 = 10 x 20
200 = 200

Therefore, 5:10, 20:40 forms a proportion.