Question

is 3,4,15,18 in proportion

Answer 1

Step-by-step explanation:

3:4: :15:18

by cross multiplication

3*18=4*15

57=60

NO THEY ARE NOT IN PROPORTION

Answer 2

No 3 , 4 , 15 , 18 are not in proportion

Given :

Four numbers 3 , 4 , 15 , 18

To find :

To check whether they are in proportion

Solution :

Step 1 of 3 :

Write down the given numbers

The given numbers are 3 , 4 , 15 , 18

Step 2 of 3 :

Write down the condition for proportion

Four given numbers a , b , c , d are said to be in proportion if product of extreme terms = product of middle terms

That is , a × d = b × c

Step 3 of 3 :

Check whether 3 , 4 , 15 , 18 are in proportion

Extreme terms are 3 & 18

Middle terms are 4 & 15

Product of extreme terms = 3 × 18 = 54

Product of middle terms = 4 × 15 = 60

Thus we observe that

Product of extreme terms ≠ Product of middle terms

Hence we can conclude that 3 , 4 , 15 , 18 are not in proportion

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