Home / 8,354.50-12,531.91-3,909.70

Finding the Fourth Proportional to 8,354.50, 12,531.91 and 3,909.70

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Solution

The fourth proportional to 8,354.50, 12,531.91 and 3,909.70 is: 5,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,354.50 : 12,531.91 = 3,909.70 : x
  2. Step 2: Convert to fraction form
    8,354.50/12,531.91 = 3,909.70/x
  3. Step 3: Cross multiply
    8,354.50x = 12,531.91 × 3,909.70
  4. Step 4: Simplify right side
    8,354.50x = 48,995,988.98
  5. Step 5: Solve for x
    x = 48,995,988.98/8,354.50
  6. Step 6: Final answer
    x = 5,864.62

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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.