Question

If a + b : b + c :c + a = 3: 4: 5, find a : b:c​

Answer 1

Step-by-step explanation:

1

If A:B = 2:3, B:C = 4:5 and C:D = 6:7, what is A:D?

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Vishnu Thakkar

Answered July 21, 2019

If we have two proportions, and we want to make one (last element of first should be first element of second like a:b:c and c:d). We need to have last number of first and first number of second the same. We can take LCM as the common value.

and

We should take LCM of 3 (Last element of first) and 4 (First element of second).

It is 12.

To bring 12 at that position, we inflate numbers is first proportion to bring 12 at last position (multiply all elements by 4) and second proportion by 3.

Now and

We can see that proportion is maintained for both.

Now, we have got and

LCM of 15 and 6 is 30. Multiplication by 2 and 5 the proportions respectively.

So, A and

Result is

We can individually check back that and

From the result we can give relationship between any two.

Ans.:

Hope it helps you.

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