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Finding the Fourth Proportional to 8,321.88, 12,486.51 and 4,426.59

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Solution

The fourth proportional to 8,321.88, 12,486.51 and 4,426.59 is: 6,641.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.88 : 12,486.51 = 4,426.59 : x
  2. Step 2: Convert to fraction form
    8,321.88/12,486.51 = 4,426.59/x
  3. Step 3: Cross multiply
    8,321.88x = 12,486.51 × 4,426.59
  4. Step 4: Simplify right side
    8,321.88x = 55,272,660.30
  5. Step 5: Solve for x
    x = 55,272,660.30/8,321.88
  6. Step 6: Final answer
    x = 6,641.85

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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.