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Finding the Fourth Proportional to 34,687.17, 52,030.89 and 8,391.87

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Solution

The fourth proportional to 34,687.17, 52,030.89 and 8,391.87 is: 12,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,687.17 : 52,030.89 = 8,391.87 : x
  2. Step 2: Convert to fraction form
    34,687.17/52,030.89 = 8,391.87/x
  3. Step 3: Cross multiply
    34,687.17x = 52,030.89 × 8,391.87
  4. Step 4: Simplify right side
    34,687.17x = 436,636,464.86
  5. Step 5: Solve for x
    x = 436,636,464.86/34,687.17
  6. Step 6: Final answer
    x = 12,587.84

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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.