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Finding the Fourth Proportional to 2,487.03, 3,432.03 and 1,367.87

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Solution

The fourth proportional to 2,487.03, 3,432.03 and 1,367.87 is: 1,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.03 : 3,432.03 = 1,367.87 : x
  2. Step 2: Convert to fraction form
    2,487.03/3,432.03 = 1,367.87/x
  3. Step 3: Cross multiply
    2,487.03x = 3,432.03 × 1,367.87
  4. Step 4: Simplify right side
    2,487.03x = 4,694,553.72
  5. Step 5: Solve for x
    x = 4,694,553.72/2,487.03
  6. Step 6: Final answer
    x = 1,887.61

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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.