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Finding the Third Proportional to 4,115.25 and 6,686.25

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Solution

The third proportional to 4,115.25 and 6,686.25 is: 10,863.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.25 : 6,686.25 = 6,686.25 : x
  2. Step 2: Convert to fraction form
    4,115.25/6,686.25 = 6,686.25/x
  3. Step 3: Cross multiply
    4,115.25x = 6,686.25 × 6,686.25
  4. Step 4: Simplify right side
    4,115.25x = 44,705,939.06
  5. Step 5: Solve for x
    x = 44,705,939.06/4,115.25
  6. Step 6: Final answer
    x = 10,863.48

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Why These Related Problems?

These problems maintain the same ratio (1.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.