Home / 8,531.56-12,799.90-2,688.20

Finding the Fourth Proportional to 8,531.56, 12,799.90 and 2,688.20

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Solution

The fourth proportional to 8,531.56, 12,799.90 and 2,688.20 is: 4,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.56 : 12,799.90 = 2,688.20 : x
  2. Step 2: Convert to fraction form
    8,531.56/12,799.90 = 2,688.20/x
  3. Step 3: Cross multiply
    8,531.56x = 12,799.90 × 2,688.20
  4. Step 4: Simplify right side
    8,531.56x = 34,408,691.18
  5. Step 5: Solve for x
    x = 34,408,691.18/8,531.56
  6. Step 6: Final answer
    x = 4,033.11

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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.