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Finding the Fourth Proportional to 5,776.20, 8,664.30 and 3,807.90

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Solution

The fourth proportional to 5,776.20, 8,664.30 and 3,807.90 is: 5,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,776.20 : 8,664.30 = 3,807.90 : x
  2. Step 2: Convert to fraction form
    5,776.20/8,664.30 = 3,807.90/x
  3. Step 3: Cross multiply
    5,776.20x = 8,664.30 × 3,807.90
  4. Step 4: Simplify right side
    5,776.20x = 32,992,787.97
  5. Step 5: Solve for x
    x = 32,992,787.97/5,776.20
  6. Step 6: Final answer
    x = 5,711.85

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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.