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Finding the Third Proportional to 3,979.88 and 8,546.81

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Solution

The third proportional to 3,979.88 and 8,546.81 is: 18,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.88 : 8,546.81 = 8,546.81 : x
  2. Step 2: Convert to fraction form
    3,979.88/8,546.81 = 8,546.81/x
  3. Step 3: Cross multiply
    3,979.88x = 8,546.81 × 8,546.81
  4. Step 4: Simplify right side
    3,979.88x = 73,048,003.91
  5. Step 5: Solve for x
    x = 73,048,003.91/3,979.88
  6. Step 6: Final answer
    x = 18,354.35

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.