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Finding the Fourth Proportional to 8,716.52, 12,027.84 and 4,939.40

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Solution

The fourth proportional to 8,716.52, 12,027.84 and 4,939.40 is: 6,815.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.52 : 12,027.84 = 4,939.40 : x
  2. Step 2: Convert to fraction form
    8,716.52/12,027.84 = 4,939.40/x
  3. Step 3: Cross multiply
    8,716.52x = 12,027.84 × 4,939.40
  4. Step 4: Simplify right side
    8,716.52x = 59,410,312.90
  5. Step 5: Solve for x
    x = 59,410,312.90/8,716.52
  6. Step 6: Final answer
    x = 6,815.83

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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.