Home / 8,531.08-12,787.42-4,138.76

Finding the Fourth Proportional to 8,531.08, 12,787.42 and 4,138.76

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Solution

The fourth proportional to 8,531.08, 12,787.42 and 4,138.76 is: 6,203.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.08 : 12,787.42 = 4,138.76 : x
  2. Step 2: Convert to fraction form
    8,531.08/12,787.42 = 4,138.76/x
  3. Step 3: Cross multiply
    8,531.08x = 12,787.42 × 4,138.76
  4. Step 4: Simplify right side
    8,531.08x = 52,924,062.40
  5. Step 5: Solve for x
    x = 52,924,062.40/8,531.08
  6. Step 6: Final answer
    x = 6,203.68

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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.