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Finding the Fourth Proportional to 5,773.60, 8,660.40 and 5,687.20

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Solution

The fourth proportional to 5,773.60, 8,660.40 and 5,687.20 is: 8,530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,773.60 : 8,660.40 = 5,687.20 : x
  2. Step 2: Convert to fraction form
    5,773.60/8,660.40 = 5,687.20/x
  3. Step 3: Cross multiply
    5,773.60x = 8,660.40 × 5,687.20
  4. Step 4: Simplify right side
    5,773.60x = 49,253,426.88
  5. Step 5: Solve for x
    x = 49,253,426.88/5,773.60
  6. Step 6: Final answer
    x = 8,530.80

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Similar ratio
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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.