Question

The first three terms of a proportion are 42 ,70 , 54. Find the fourth term of the proportion​

Answer 1

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Answer:

The required fourth number is 35.

Step-by-step explanation:

Given : The first three terms of a proportion are 3,5 and 21 respectively.

To find : The fourth term ?

Solution :

Let the fourth number be 'x',

So, Numbers proportion are 3,5,21,x

According to proportionality,

Product of means = Product of extremes

i.e.

Cross