How do you solve the proportion7/5=x/3 ??

2 answers:

mote1985 [20]3 years ago

5 0

The way I like to solve proportions is by cross multiplying and dividing. First yo multiply the diagonals and then you divide by the other number. So if your proportion is 7/5 = x/3, your equation would be 7*3/5. So 7*3 is 21, so your equation is now 21/5. With some long division, you'll see that 21/5 = 4.2 That's your answer, feel free to ask more questions if you need!!(:

WINSTONCH [101]3 years ago

3 0

7/5=x/3
so multiply them diagonally. 7*3=21 and 5*x=5x
5x=21
divide it by 5
so....
5x/5=21/5
x=4.2

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