Question

Tell whether the ratios form proportions
4:20 and 6:30
9/18,3/8

Answer 1

9514 1404 393

Answer:

• yes
• no

Explanation:

1) Each of the ratios can be reduced to 1 : 5, Since both can be reduced to the same ratio, the do form a proportion.

4 : 20 = 1 : 5

6 : 30 = 1 : 5

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2) The first ratio can be reduced to 1/2. The second ratio is not 1/2 and cannot be reduced. Since they are different ratios, they do not form a proportion.

9/18 = 1/2

3/8 = 3/8