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Finding the Fourth Proportional to 8,218.88, 12,327.20 and 2,671.68

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Solution

The fourth proportional to 8,218.88, 12,327.20 and 2,671.68 is: 4,007.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.88 : 12,327.20 = 2,671.68 : x
  2. Step 2: Convert to fraction form
    8,218.88/12,327.20 = 2,671.68/x
  3. Step 3: Cross multiply
    8,218.88x = 12,327.20 × 2,671.68
  4. Step 4: Simplify right side
    8,218.88x = 32,934,333.70
  5. Step 5: Solve for x
    x = 32,934,333.70/8,218.88
  6. Step 6: Final answer
    x = 4,007.16

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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.