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Finding the Fourth Proportional to 2,458.38, 3,687.57 and 726.87

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Solution

The fourth proportional to 2,458.38, 3,687.57 and 726.87 is: 1,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,458.38 : 3,687.57 = 726.87 : x
  2. Step 2: Convert to fraction form
    2,458.38/3,687.57 = 726.87/x
  3. Step 3: Cross multiply
    2,458.38x = 3,687.57 × 726.87
  4. Step 4: Simplify right side
    2,458.38x = 2,680,384.01
  5. Step 5: Solve for x
    x = 2,680,384.01/2,458.38
  6. Step 6: Final answer
    x = 1,090.31

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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.