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Finding the Fourth Proportional to 8,326.76, 12,490.62 and 3,132.68

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Solution

The fourth proportional to 8,326.76, 12,490.62 and 3,132.68 is: 4,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.76 : 12,490.62 = 3,132.68 : x
  2. Step 2: Convert to fraction form
    8,326.76/12,490.62 = 3,132.68/x
  3. Step 3: Cross multiply
    8,326.76x = 12,490.62 × 3,132.68
  4. Step 4: Simplify right side
    8,326.76x = 39,129,115.46
  5. Step 5: Solve for x
    x = 39,129,115.46/8,326.76
  6. Step 6: Final answer
    x = 4,699.20

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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.