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Finding the Fourth Proportional to 2,542.52, 3,812.68 and 876.82

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Solution

The fourth proportional to 2,542.52, 3,812.68 and 876.82 is: 1,314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,542.52 : 3,812.68 = 876.82 : x
  2. Step 2: Convert to fraction form
    2,542.52/3,812.68 = 876.82/x
  3. Step 3: Cross multiply
    2,542.52x = 3,812.68 × 876.82
  4. Step 4: Simplify right side
    2,542.52x = 3,343,034.08
  5. Step 5: Solve for x
    x = 3,343,034.08/2,542.52
  6. Step 6: Final answer
    x = 1,314.85

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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.