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Finding the Third Proportional to 1,245.75 and 2,643.34

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Solution

The third proportional to 1,245.75 and 2,643.34 is: 5,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.75 : 2,643.34 = 2,643.34 : x
  2. Step 2: Convert to fraction form
    1,245.75/2,643.34 = 2,643.34/x
  3. Step 3: Cross multiply
    1,245.75x = 2,643.34 × 2,643.34
  4. Step 4: Simplify right side
    1,245.75x = 6,987,266.18
  5. Step 5: Solve for x
    x = 6,987,266.18/1,245.75
  6. Step 6: Final answer
    x = 5,608.88

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.