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Finding the Fourth Proportional to 8,361.35, 12,545.21 and 3,921.44

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Solution

The fourth proportional to 8,361.35, 12,545.21 and 3,921.44 is: 5,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.35 : 12,545.21 = 3,921.44 : x
  2. Step 2: Convert to fraction form
    8,361.35/12,545.21 = 3,921.44/x
  3. Step 3: Cross multiply
    8,361.35x = 12,545.21 × 3,921.44
  4. Step 4: Simplify right side
    8,361.35x = 49,195,205.97
  5. Step 5: Solve for x
    x = 49,195,205.97/8,361.35
  6. Step 6: Final answer
    x = 5,883.65

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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.