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Finding the Fourth Proportional to 3,167.92, 4,752.42 and 1,087.39

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Solution

The fourth proportional to 3,167.92, 4,752.42 and 1,087.39 is: 1,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.92 : 4,752.42 = 1,087.39 : x
  2. Step 2: Convert to fraction form
    3,167.92/4,752.42 = 1,087.39/x
  3. Step 3: Cross multiply
    3,167.92x = 4,752.42 × 1,087.39
  4. Step 4: Simplify right side
    3,167.92x = 5,167,704.78
  5. Step 5: Solve for x
    x = 5,167,704.78/3,167.92
  6. Step 6: Final answer
    x = 1,631.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.