Question

Determine whether 15, 45, 40, 120 are in proportion?

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Answer 1

Step-by-step explanation:

If 15:45::40: 120 are in proportion

● Product of extremes = Product of means

● (extremes = 15 and 120 , means = 45 and 40)

●so,

●Product of extremes = 15 x 120 = 1400

●Product of means = 45 x 40 = 1800

• Since the Product of extremes is not equal to Product of means

15, 45, 40 , 120 are not in proportion

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