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Finding the Third Proportional to 1,379.25 and 2,078.44

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Solution

The third proportional to 1,379.25 and 2,078.44 is: 3,132.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.25 : 2,078.44 = 2,078.44 : x
  2. Step 2: Convert to fraction form
    1,379.25/2,078.44 = 2,078.44/x
  3. Step 3: Cross multiply
    1,379.25x = 2,078.44 × 2,078.44
  4. Step 4: Simplify right side
    1,379.25x = 4,319,902.44
  5. Step 5: Solve for x
    x = 4,319,902.44/1,379.25
  6. Step 6: Final answer
    x = 3,132.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.