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Finding the Fourth Proportional to 8,486.75, 11,704.15 and 5,499.61

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Solution

The fourth proportional to 8,486.75, 11,704.15 and 5,499.61 is: 7,584.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.75 : 11,704.15 = 5,499.61 : x
  2. Step 2: Convert to fraction form
    8,486.75/11,704.15 = 5,499.61/x
  3. Step 3: Cross multiply
    8,486.75x = 11,704.15 × 5,499.61
  4. Step 4: Simplify right side
    8,486.75x = 64,368,260.38
  5. Step 5: Solve for x
    x = 64,368,260.38/8,486.75
  6. Step 6: Final answer
    x = 7,584.56

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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.