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Finding the Third Proportional to 865.69 and 1,874.25

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Solution

The third proportional to 865.69 and 1,874.25 is: 4,057.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.69 : 1,874.25 = 1,874.25 : x
  2. Step 2: Convert to fraction form
    865.69/1,874.25 = 1,874.25/x
  3. Step 3: Cross multiply
    865.69x = 1,874.25 × 1,874.25
  4. Step 4: Simplify right side
    865.69x = 3,512,813.06
  5. Step 5: Solve for x
    x = 3,512,813.06/865.69
  6. Step 6: Final answer
    x = 4,057.83

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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.