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Finding the Fourth Proportional to 8,338.86, 11,517.08 and 5,681.66

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Solution

The fourth proportional to 8,338.86, 11,517.08 and 5,681.66 is: 7,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,338.86 : 11,517.08 = 5,681.66 : x
  2. Step 2: Convert to fraction form
    8,338.86/11,517.08 = 5,681.66/x
  3. Step 3: Cross multiply
    8,338.86x = 11,517.08 × 5,681.66
  4. Step 4: Simplify right side
    8,338.86x = 65,436,046.76
  5. Step 5: Solve for x
    x = 65,436,046.76/8,338.86
  6. Step 6: Final answer
    x = 7,847.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.