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Finding the Third Proportional to 1,118.25 and 2,418.75

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Solution

The third proportional to 1,118.25 and 2,418.75 is: 5,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.25 : 2,418.75 = 2,418.75 : x
  2. Step 2: Convert to fraction form
    1,118.25/2,418.75 = 2,418.75/x
  3. Step 3: Cross multiply
    1,118.25x = 2,418.75 × 2,418.75
  4. Step 4: Simplify right side
    1,118.25x = 5,850,351.56
  5. Step 5: Solve for x
    x = 5,850,351.56/1,118.25
  6. Step 6: Final answer
    x = 5,231.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.