Question

the first three terms of a proporation are 3 ,5 and respectfully find it fourth term
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Answer 1

Answer:

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

3: 5 :: 12:x  

i.e, 3/5 = 21/x

Cross multiply,

3x = 21 x 5

3x = 105

x = 105/3

x = 35

Therefore, The required fourth number is 35.

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Answer 2

Answer:

hope so it will helpful to you