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Finding the Fourth Proportional to 8,543.10, 12,793.05 and 6,339.90

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Solution

The fourth proportional to 8,543.10, 12,793.05 and 6,339.90 is: 9,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.10 : 12,793.05 = 6,339.90 : x
  2. Step 2: Convert to fraction form
    8,543.10/12,793.05 = 6,339.90/x
  3. Step 3: Cross multiply
    8,543.10x = 12,793.05 × 6,339.90
  4. Step 4: Simplify right side
    8,543.10x = 81,106,657.70
  5. Step 5: Solve for x
    x = 81,106,657.70/8,543.10
  6. Step 6: Final answer
    x = 9,493.82

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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.