math
posted by Aleah .
A U.S. nickel contains 3 ounces of copper for every ounce of nickel. How much nickel is required for 14 pounds of copper?

Your turn. See my last post.

x/3=14/1
1x/1=42/1
x=42 
Oops  your answer doesn't make sense. There's much LESS nickel than copper in the coin.
Please try again. 
I really don't understand how to work this problem.

You had the right idea  but you didn't set up the correct proportion.
3 is to 1 as 14 is to x.
3/1 = 14/x
Now  cross multiply.
What do you get? 
I got 4.6.

Yes  except you should round 4.66666 to 4.7 pounds.