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Use cross products to see if each pair of ratios forms a proportion. Replace each box with = or ≠.
1.
7/5 ? 15/10

=

2.
6/8 ? 15/20

=

Solve each problem.
3.
2/3 = 1.2/x

x = 18
x = 1.8
x = 0.2
x = 10

4.
4/5 equals 8/x plus 2

x = 4
x = 9.5
x = 2
x = 8

Create a proportion and solve.

5.
A recipe uses 3 cups of flour to make 48 cookies. How much flour is needed to make 72 cookies? (1 point)

3/48 = 72/x, x = 1,152 cups
3/48 = x/72, x = 4.5 cups
3/48 = x/72, x = 2 cups
x/48 = 3/72, x = 2 cups

Here are my answers. Are they correct? Thanks!
1. ≠
2. =
3. 1.8
4. x = 8
5. 3/48 = x/72, x = 4.5 cups

Yay! All are right!

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1. ≠
2. =
3. 1.8
4. x = 8
5. 3/48 = x/72, x = 4.5 cups
100%

I hereby dub thee- CORRECT!

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They are right!!! I got a 100%!

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Thank you, all of you! 5/5, 100%!!!

Wait I got different ones from three down