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Finding the Fourth Proportional to 8,805.11, 13,207.71 and 2,231.31

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Solution

The fourth proportional to 8,805.11, 13,207.71 and 2,231.31 is: 3,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,805.11 : 13,207.71 = 2,231.31 : x
  2. Step 2: Convert to fraction form
    8,805.11/13,207.71 = 2,231.31/x
  3. Step 3: Cross multiply
    8,805.11x = 13,207.71 × 2,231.31
  4. Step 4: Simplify right side
    8,805.11x = 29,470,495.40
  5. Step 5: Solve for x
    x = 29,470,495.40/8,805.11
  6. Step 6: Final answer
    x = 3,346.98

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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.