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Finding the Fourth Proportional to 8,379.66, 12,575.58 and 6,755.79

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Solution

The fourth proportional to 8,379.66, 12,575.58 and 6,755.79 is: 10,138.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.66 : 12,575.58 = 6,755.79 : x
  2. Step 2: Convert to fraction form
    8,379.66/12,575.58 = 6,755.79/x
  3. Step 3: Cross multiply
    8,379.66x = 12,575.58 × 6,755.79
  4. Step 4: Simplify right side
    8,379.66x = 84,957,977.61
  5. Step 5: Solve for x
    x = 84,957,977.61/8,379.66
  6. Step 6: Final answer
    x = 10,138.59

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1.5x scale

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.