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Finding the Fourth Proportional to 8,811.81, 13,217.72 and 3,881.48

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Solution

The fourth proportional to 8,811.81, 13,217.72 and 3,881.48 is: 5,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.81 : 13,217.72 = 3,881.48 : x
  2. Step 2: Convert to fraction form
    8,811.81/13,217.72 = 3,881.48/x
  3. Step 3: Cross multiply
    8,811.81x = 13,217.72 × 3,881.48
  4. Step 4: Simplify right side
    8,811.81x = 51,304,230.33
  5. Step 5: Solve for x
    x = 51,304,230.33/8,811.81
  6. Step 6: Final answer
    x = 5,822.21

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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.