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Finding the Fourth Proportional to 5,787.52, 8,679.04 and 2,088.78

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Solution

The fourth proportional to 5,787.52, 8,679.04 and 2,088.78 is: 3,132.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.52 : 8,679.04 = 2,088.78 : x
  2. Step 2: Convert to fraction form
    5,787.52/8,679.04 = 2,088.78/x
  3. Step 3: Cross multiply
    5,787.52x = 8,679.04 × 2,088.78
  4. Step 4: Simplify right side
    5,787.52x = 18,128,605.17
  5. Step 5: Solve for x
    x = 18,128,605.17/5,787.52
  6. Step 6: Final answer
    x = 3,132.36

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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.