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Finding the Third Proportional to 1,424.25 and 2,181.75

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Solution

The third proportional to 1,424.25 and 2,181.75 is: 3,342.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.25 : 2,181.75 = 2,181.75 : x
  2. Step 2: Convert to fraction form
    1,424.25/2,181.75 = 2,181.75/x
  3. Step 3: Cross multiply
    1,424.25x = 2,181.75 × 2,181.75
  4. Step 4: Simplify right side
    1,424.25x = 4,760,033.06
  5. Step 5: Solve for x
    x = 4,760,033.06/1,424.25
  6. Step 6: Final answer
    x = 3,342.13

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.