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Finding the Fourth Proportional to 8,739.70, 12,060.68 and 4,760.90

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Solution

The fourth proportional to 8,739.70, 12,060.68 and 4,760.90 is: 6,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,739.70 : 12,060.68 = 4,760.90 : x
  2. Step 2: Convert to fraction form
    8,739.70/12,060.68 = 4,760.90/x
  3. Step 3: Cross multiply
    8,739.70x = 12,060.68 × 4,760.90
  4. Step 4: Simplify right side
    8,739.70x = 57,419,691.41
  5. Step 5: Solve for x
    x = 57,419,691.41/8,739.70
  6. Step 6: Final answer
    x = 6,569.98

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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.