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Finding the Fourth Proportional to 8,468.99, 12,711.28 and 4,311.97

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Solution

The fourth proportional to 8,468.99, 12,711.28 and 4,311.97 is: 6,471.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,468.99 : 12,711.28 = 4,311.97 : x
  2. Step 2: Convert to fraction form
    8,468.99/12,711.28 = 4,311.97/x
  3. Step 3: Cross multiply
    8,468.99x = 12,711.28 × 4,311.97
  4. Step 4: Simplify right side
    8,468.99x = 54,810,658.02
  5. Step 5: Solve for x
    x = 54,810,658.02/8,468.99
  6. Step 6: Final answer
    x = 6,471.92

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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.