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

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!

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