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Finding the Fourth Proportional to 5,787.87, 8,682.72 and 2,091.01

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Solution

The fourth proportional to 5,787.87, 8,682.72 and 2,091.01 is: 3,136.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.87 : 8,682.72 = 2,091.01 : x
  2. Step 2: Convert to fraction form
    5,787.87/8,682.72 = 2,091.01/x
  3. Step 3: Cross multiply
    5,787.87x = 8,682.72 × 2,091.01
  4. Step 4: Simplify right side
    5,787.87x = 18,155,654.35
  5. Step 5: Solve for x
    x = 18,155,654.35/5,787.87
  6. Step 6: Final answer
    x = 3,136.85

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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.