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Finding the Fourth Proportional to 8,489.03, 12,725.33 and 2,938.21

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Solution

The fourth proportional to 8,489.03, 12,725.33 and 2,938.21 is: 4,404.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.03 : 12,725.33 = 2,938.21 : x
  2. Step 2: Convert to fraction form
    8,489.03/12,725.33 = 2,938.21/x
  3. Step 3: Cross multiply
    8,489.03x = 12,725.33 × 2,938.21
  4. Step 4: Simplify right side
    8,489.03x = 37,389,645.35
  5. Step 5: Solve for x
    x = 37,389,645.35/8,489.03
  6. Step 6: Final answer
    x = 4,404.47

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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.