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Finding the Third Proportional to 4,391.44 and 9,489.38

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Solution

The third proportional to 4,391.44 and 9,489.38 is: 20,505.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.44 : 9,489.38 = 9,489.38 : x
  2. Step 2: Convert to fraction form
    4,391.44/9,489.38 = 9,489.38/x
  3. Step 3: Cross multiply
    4,391.44x = 9,489.38 × 9,489.38
  4. Step 4: Simplify right side
    4,391.44x = 90,048,237.89
  5. Step 5: Solve for x
    x = 90,048,237.89/4,391.44
  6. Step 6: Final answer
    x = 20,505.41

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.