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Finding the Fourth Proportional to 8,787.72, 13,181.48 and 3,589.96

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Solution

The fourth proportional to 8,787.72, 13,181.48 and 3,589.96 is: 5,384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.72 : 13,181.48 = 3,589.96 : x
  2. Step 2: Convert to fraction form
    8,787.72/13,181.48 = 3,589.96/x
  3. Step 3: Cross multiply
    8,787.72x = 13,181.48 × 3,589.96
  4. Step 4: Simplify right side
    8,787.72x = 47,320,985.94
  5. Step 5: Solve for x
    x = 47,320,985.94/8,787.72
  6. Step 6: Final answer
    x = 5,384.90

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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.