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Finding the Fourth Proportional to 8,577.21, 12,843.24 and 6,902.40

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Solution

The fourth proportional to 8,577.21, 12,843.24 and 6,902.40 is: 10,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,577.21 : 12,843.24 = 6,902.40 : x
  2. Step 2: Convert to fraction form
    8,577.21/12,843.24 = 6,902.40/x
  3. Step 3: Cross multiply
    8,577.21x = 12,843.24 × 6,902.40
  4. Step 4: Simplify right side
    8,577.21x = 88,649,179.78
  5. Step 5: Solve for x
    x = 88,649,179.78/8,577.21
  6. Step 6: Final answer
    x = 10,335.43

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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.