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Finding the Fourth Proportional to 8,909, 13,364.22 and 2,753

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Solution

The fourth proportional to 8,909, 13,364.22 and 2,753 is: 4,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909 : 13,364.22 = 2,753 : x
  2. Step 2: Convert to fraction form
    8,909/13,364.22 = 2,753/x
  3. Step 3: Cross multiply
    8,909x = 13,364.22 × 2,753
  4. Step 4: Simplify right side
    8,909x = 36,791,697.66
  5. Step 5: Solve for x
    x = 36,791,697.66/8,909
  6. Step 6: Final answer
    x = 4,129.72

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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.