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Finding the Third Proportional to 1,418.25 and 2,190.75

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Solution

The third proportional to 1,418.25 and 2,190.75 is: 3,384.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.25 : 2,190.75 = 2,190.75 : x
  2. Step 2: Convert to fraction form
    1,418.25/2,190.75 = 2,190.75/x
  3. Step 3: Cross multiply
    1,418.25x = 2,190.75 × 2,190.75
  4. Step 4: Simplify right side
    1,418.25x = 4,799,385.56
  5. Step 5: Solve for x
    x = 4,799,385.56/1,418.25
  6. Step 6: Final answer
    x = 3,384.02

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.