Question

Find whether 12,30,40 and 100 are in proportion or not


step by step explain​

Answer 1

Answer:

this is in proportion

Step-by-step explanation:

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Answer 2

Answer:

Yes, they are in proportion.

Step-by-step explanation:

12:30 :: 40:100

= 12/30 = 40/100

= 12/30 = 4/10

We will do cross multiplication and check if they are equal or not.

= 12 × 10 = 30 × 4

= 120 = 120

They are equal which means that they are in proportion.

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