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Finding the Fourth Proportional to 8,326.76, 12,491.49 and 3,888.86

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Solution

The fourth proportional to 8,326.76, 12,491.49 and 3,888.86 is: 5,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.76 : 12,491.49 = 3,888.86 : x
  2. Step 2: Convert to fraction form
    8,326.76/12,491.49 = 3,888.86/x
  3. Step 3: Cross multiply
    8,326.76x = 12,491.49 × 3,888.86
  4. Step 4: Simplify right side
    8,326.76x = 48,577,655.80
  5. Step 5: Solve for x
    x = 48,577,655.80/8,326.76
  6. Step 6: Final answer
    x = 5,833.92

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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.