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Finding the Third Proportional to 5,400.25 and 12,879.63

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Solution

The third proportional to 5,400.25 and 12,879.63 is: 30,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,400.25 : 12,879.63 = 12,879.63 : x
  2. Step 2: Convert to fraction form
    5,400.25/12,879.63 = 12,879.63/x
  3. Step 3: Cross multiply
    5,400.25x = 12,879.63 × 12,879.63
  4. Step 4: Simplify right side
    5,400.25x = 165,884,740.14
  5. Step 5: Solve for x
    x = 165,884,740.14/5,400.25
  6. Step 6: Final answer
    x = 30,717.97

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.