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Finding the Fourth Proportional to 8,620.52, 12,901.82 and 6,078.12

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Solution

The fourth proportional to 8,620.52, 12,901.82 and 6,078.12 is: 9,096.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.52 : 12,901.82 = 6,078.12 : x
  2. Step 2: Convert to fraction form
    8,620.52/12,901.82 = 6,078.12/x
  3. Step 3: Cross multiply
    8,620.52x = 12,901.82 × 6,078.12
  4. Step 4: Simplify right side
    8,620.52x = 78,418,810.18
  5. Step 5: Solve for x
    x = 78,418,810.18/8,620.52
  6. Step 6: Final answer
    x = 9,096.76

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1.5x scale

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.