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Finding the Fourth Proportional to 8,640.60, 12,958.11 and 2,795.82

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Solution

The fourth proportional to 8,640.60, 12,958.11 and 2,795.82 is: 4,192.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.60 : 12,958.11 = 2,795.82 : x
  2. Step 2: Convert to fraction form
    8,640.60/12,958.11 = 2,795.82/x
  3. Step 3: Cross multiply
    8,640.60x = 12,958.11 × 2,795.82
  4. Step 4: Simplify right side
    8,640.60x = 36,228,543.10
  5. Step 5: Solve for x
    x = 36,228,543.10/8,640.60
  6. Step 6: Final answer
    x = 4,192.83

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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.