Home / 2,175.19-3,001.79-1,243.69

Finding the Fourth Proportional to 2,175.19, 3,001.79 and 1,243.69

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Solution

The fourth proportional to 2,175.19, 3,001.79 and 1,243.69 is: 1,716.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.19 : 3,001.79 = 1,243.69 : x
  2. Step 2: Convert to fraction form
    2,175.19/3,001.79 = 1,243.69/x
  3. Step 3: Cross multiply
    2,175.19x = 3,001.79 × 1,243.69
  4. Step 4: Simplify right side
    2,175.19x = 3,733,291.81
  5. Step 5: Solve for x
    x = 3,733,291.81/2,175.19
  6. Step 6: Final answer
    x = 1,716.31

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.