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Finding the Fourth Proportional to 8,200.65, 12,302.78 and 2,654.56

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Solution

The fourth proportional to 8,200.65, 12,302.78 and 2,654.56 is: 3,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.65 : 12,302.78 = 2,654.56 : x
  2. Step 2: Convert to fraction form
    8,200.65/12,302.78 = 2,654.56/x
  3. Step 3: Cross multiply
    8,200.65x = 12,302.78 × 2,654.56
  4. Step 4: Simplify right side
    8,200.65x = 32,658,467.68
  5. Step 5: Solve for x
    x = 32,658,467.68/8,200.65
  6. Step 6: Final answer
    x = 3,982.42

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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.