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Finding the Third Proportional to 4,431.38 and 9,318.38

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Solution

The third proportional to 4,431.38 and 9,318.38 is: 19,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,431.38 : 9,318.38 = 9,318.38 : x
  2. Step 2: Convert to fraction form
    4,431.38/9,318.38 = 9,318.38/x
  3. Step 3: Cross multiply
    4,431.38x = 9,318.38 × 9,318.38
  4. Step 4: Simplify right side
    4,431.38x = 86,832,112.64
  5. Step 5: Solve for x
    x = 86,832,112.64/4,431.38
  6. Step 6: Final answer
    x = 19,594.85

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.