Home / 8,531.87-12,799.19-2,687.12

Finding the Fourth Proportional to 8,531.87, 12,799.19 and 2,687.12

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Solution

The fourth proportional to 8,531.87, 12,799.19 and 2,687.12 is: 4,031.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.87 : 12,799.19 = 2,687.12 : x
  2. Step 2: Convert to fraction form
    8,531.87/12,799.19 = 2,687.12/x
  3. Step 3: Cross multiply
    8,531.87x = 12,799.19 × 2,687.12
  4. Step 4: Simplify right side
    8,531.87x = 34,392,902.15
  5. Step 5: Solve for x
    x = 34,392,902.15/8,531.87
  6. Step 6: Final answer
    x = 4,031.11

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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.