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Finding the Fourth Proportional to 8,169.64, 12,240.28 and 6,425.92

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Solution

The fourth proportional to 8,169.64, 12,240.28 and 6,425.92 is: 9,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.64 : 12,240.28 = 6,425.92 : x
  2. Step 2: Convert to fraction form
    8,169.64/12,240.28 = 6,425.92/x
  3. Step 3: Cross multiply
    8,169.64x = 12,240.28 × 6,425.92
  4. Step 4: Simplify right side
    8,169.64x = 78,655,060.06
  5. Step 5: Solve for x
    x = 78,655,060.06/8,169.64
  6. Step 6: Final answer
    x = 9,627.73

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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.