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Finding the Fourth Proportional to 8,658.60, 11,934.84 and 6,766.88

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Solution

The fourth proportional to 8,658.60, 11,934.84 and 6,766.88 is: 9,327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.60 : 11,934.84 = 6,766.88 : x
  2. Step 2: Convert to fraction form
    8,658.60/11,934.84 = 6,766.88/x
  3. Step 3: Cross multiply
    8,658.60x = 11,934.84 × 6,766.88
  4. Step 4: Simplify right side
    8,658.60x = 80,761,630.10
  5. Step 5: Solve for x
    x = 80,761,630.10/8,658.60
  6. Step 6: Final answer
    x = 9,327.33

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1.5x scale

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.