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Finding the Third Proportional to 1,380.25 and 3,255.25

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Solution

The third proportional to 1,380.25 and 3,255.25 is: 7,677.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380.25 : 3,255.25 = 3,255.25 : x
  2. Step 2: Convert to fraction form
    1,380.25/3,255.25 = 3,255.25/x
  3. Step 3: Cross multiply
    1,380.25x = 3,255.25 × 3,255.25
  4. Step 4: Simplify right side
    1,380.25x = 10,596,652.56
  5. Step 5: Solve for x
    x = 10,596,652.56/1,380.25
  6. Step 6: Final answer
    x = 7,677.34

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.