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math

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I'm not understanding and writing the following proportion: 8 is to 64 as 2 is to x, can somebody explain how to solve this problem.

  • math -

    A survey indicated that 3 out of doctors used brand x aspirin. if 2000 doctors were surveyed, how many used brand X?

    I need help understanding the problem of this math. Can somebody explain this to me.

  • math -

    Here's the first one.

    8/64 = 2/x

    Cross multiply.

    8x = 128

    Solve for x.

    x = 128/8

    x = 16

    You haven't posted enough information to solve the second problem.

  • math -

    Solve for x 8 is to 64 as 2 is to x

  • math -

    A survey indicated that 3 out of 5 doctors use Brand X aspirin. If $2,000 were surveyed, how many used Brand X?

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