Question

3. Find x in the following proportion
x：4 =9：12
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Answer 1

Answer:

Hope it helps :)

Step-by-step explanation:

x : 4 = 9 : 12

here you can also use a long and a short method

I am showing the short method to explain

in ratio it will be multiple of each other

like 12 is a multiple of 4

4*3=12

when 4 multiply by 3 will be the number to multiply the with the number x also we will multiply 3 so it will become 9

now find any number which will make 9 after being multiplied by 3

so the answer is 3

3*3=9

4*3=12

so by this method you can get the answer and you need not to write so much also.

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