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Finding the Fourth Proportional to 8,361.04, 12,545.16 and 3,168.40

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Solution

The fourth proportional to 8,361.04, 12,545.16 and 3,168.40 is: 4,753.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.04 : 12,545.16 = 3,168.40 : x
  2. Step 2: Convert to fraction form
    8,361.04/12,545.16 = 3,168.40/x
  3. Step 3: Cross multiply
    8,361.04x = 12,545.16 × 3,168.40
  4. Step 4: Simplify right side
    8,361.04x = 39,748,084.94
  5. Step 5: Solve for x
    x = 39,748,084.94/8,361.04
  6. Step 6: Final answer
    x = 4,753.96

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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.