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Finding the Third Proportional to 3,979.60 and 8,650.23

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Solution

The third proportional to 3,979.60 and 8,650.23 is: 18,802.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.60 : 8,650.23 = 8,650.23 : x
  2. Step 2: Convert to fraction form
    3,979.60/8,650.23 = 8,650.23/x
  3. Step 3: Cross multiply
    3,979.60x = 8,650.23 × 8,650.23
  4. Step 4: Simplify right side
    3,979.60x = 74,826,487.16
  5. Step 5: Solve for x
    x = 74,826,487.16/3,979.60
  6. Step 6: Final answer
    x = 18,802.52

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.