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Finding the Fourth Proportional to 8,408.46, 12,620.48 and 4,251.41

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Solution

The fourth proportional to 8,408.46, 12,620.48 and 4,251.41 is: 6,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,408.46 : 12,620.48 = 4,251.41 : x
  2. Step 2: Convert to fraction form
    8,408.46/12,620.48 = 4,251.41/x
  3. Step 3: Cross multiply
    8,408.46x = 12,620.48 × 4,251.41
  4. Step 4: Simplify right side
    8,408.46x = 53,654,834.88
  5. Step 5: Solve for x
    x = 53,654,834.88/8,408.46
  6. Step 6: Final answer
    x = 6,381.05

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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.