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NemiM [27]
3 years ago
9

Solve the following proportion for x

Mathematics
1 answer:
fenix001 [56]3 years ago
8 0
5:8
X:7

Cross multiply :
= 7(5)=8x

35=8x
Now divide both sides by 8
35/8= x
x= 4.375


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Fist of all, y = 8 and x = 3 is more likely to be understood as a ratio. So for the rest of the answer, their relationship would be represented as y:x

Thus: y:x = 8:3

The problem would be finding y when x = 45

Let us proceed on using the previous equation and substitute x with 45 which would look like this:

y:45 = 8:3

Ratios can also be expressed as fractions which would make things more understandable and easy to solve. So the new form of our equation would be like this:

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Then we proceed with a cross multiplication where the equation becomes like as what is shown below:

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Another way of looking at the problem, especially problems like these, is to take the whole question or statement as an equation. it would probably look like this:

y = 8 when x = 3 : y = ? when x = 45

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