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Finding the Fourth Proportional to 8,562.61, 12,851.20 and 3,372.13

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Solution

The fourth proportional to 8,562.61, 12,851.20 and 3,372.13 is: 5,061.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,562.61 : 12,851.20 = 3,372.13 : x
  2. Step 2: Convert to fraction form
    8,562.61/12,851.20 = 3,372.13/x
  3. Step 3: Cross multiply
    8,562.61x = 12,851.20 × 3,372.13
  4. Step 4: Simplify right side
    8,562.61x = 43,335,852.80
  5. Step 5: Solve for x
    x = 43,335,852.80/8,562.61
  6. Step 6: Final answer
    x = 5,061.06

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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.