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Finding the Fourth Proportional to 6,471.92, 9,711.80 and 2,311.60

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Solution

The fourth proportional to 6,471.92, 9,711.80 and 2,311.60 is: 3,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,471.92 : 9,711.80 = 2,311.60 : x
  2. Step 2: Convert to fraction form
    6,471.92/9,711.80 = 2,311.60/x
  3. Step 3: Cross multiply
    6,471.92x = 9,711.80 × 2,311.60
  4. Step 4: Simplify right side
    6,471.92x = 22,449,796.88
  5. Step 5: Solve for x
    x = 22,449,796.88/6,471.92
  6. Step 6: Final answer
    x = 3,468.80

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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.