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Finding the Fourth Proportional to 8,681.22, 13,021.29 and 3,747.39

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Solution

The fourth proportional to 8,681.22, 13,021.29 and 3,747.39 is: 5,620.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.22 : 13,021.29 = 3,747.39 : x
  2. Step 2: Convert to fraction form
    8,681.22/13,021.29 = 3,747.39/x
  3. Step 3: Cross multiply
    8,681.22x = 13,021.29 × 3,747.39
  4. Step 4: Simplify right side
    8,681.22x = 48,795,851.93
  5. Step 5: Solve for x
    x = 48,795,851.93/8,681.22
  6. Step 6: Final answer
    x = 5,620.85

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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.