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Finding the Fourth Proportional to 8,451, 12,676.26 and 3,769.80

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Solution

The fourth proportional to 8,451, 12,676.26 and 3,769.80 is: 5,654.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,451 : 12,676.26 = 3,769.80 : x
  2. Step 2: Convert to fraction form
    8,451/12,676.26 = 3,769.80/x
  3. Step 3: Cross multiply
    8,451x = 12,676.26 × 3,769.80
  4. Step 4: Simplify right side
    8,451x = 47,786,964.95
  5. Step 5: Solve for x
    x = 47,786,964.95/8,451
  6. Step 6: Final answer
    x = 5,654.59

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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.