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Finding the Fourth Proportional to 8,168.64, 12,248.29 and 3,781.81

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Solution

The fourth proportional to 8,168.64, 12,248.29 and 3,781.81 is: 5,670.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.64 : 12,248.29 = 3,781.81 : x
  2. Step 2: Convert to fraction form
    8,168.64/12,248.29 = 3,781.81/x
  3. Step 3: Cross multiply
    8,168.64x = 12,248.29 × 3,781.81
  4. Step 4: Simplify right side
    8,168.64x = 46,320,705.60
  5. Step 5: Solve for x
    x = 46,320,705.60/8,168.64
  6. Step 6: Final answer
    x = 5,670.55

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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.