say it is 1 over 2 is equal to x over 4 you multiply 4 and 1 then 2 and x and you get 4=2x. Solve for x = 2. So the equivalent proportion is 2/4.
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Three mathematical concepts are inherent to solving proportional equations. The first is algebraic operations, and using the same process on both sides of the parenthesis' expression. Other algebraic skills include cross-multiplication, division, and simplification of quantities. The second is an understanding of percent's and fractions, which can help visualize the proportions.
That question is a lot like asking "How do you build what the customer ordered using a hammer and a saw ?" Before you can decide how to use your tools and what to do with them, you need to know what the customer ordered, and what final product is expected.
350. if 1-----10fing 35-------?x using cross analysis solve for x=350
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Write an equation: 2=40%n (n stands for the number) 2=40/100 *n transform the equation by using inverse operations (see Mr. Nystrom on Youtube) (2/n)=40/100*(n/n) 2/n=40/100 cross multiply to get 40n=200 use transformations agian 40n/40=200/40 we get n=200/40 n=5 so the answer is 5