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Finding the Third Proportional to 1,424.25 and 3,125.25

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Solution

The third proportional to 1,424.25 and 3,125.25 is: 6,857.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.25 : 3,125.25 = 3,125.25 : x
  2. Step 2: Convert to fraction form
    1,424.25/3,125.25 = 3,125.25/x
  3. Step 3: Cross multiply
    1,424.25x = 3,125.25 × 3,125.25
  4. Step 4: Simplify right side
    1,424.25x = 9,767,187.56
  5. Step 5: Solve for x
    x = 9,767,187.56/1,424.25
  6. Step 6: Final answer
    x = 6,857.78

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.