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Finding the Third Proportional to 3,979.13 and 9,429.75

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Solution

The third proportional to 3,979.13 and 9,429.75 is: 22,346.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.13 : 9,429.75 = 9,429.75 : x
  2. Step 2: Convert to fraction form
    3,979.13/9,429.75 = 9,429.75/x
  3. Step 3: Cross multiply
    3,979.13x = 9,429.75 × 9,429.75
  4. Step 4: Simplify right side
    3,979.13x = 88,920,185.06
  5. Step 5: Solve for x
    x = 88,920,185.06/3,979.13
  6. Step 6: Final answer
    x = 22,346.67

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.