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Finding the Third Proportional to 2,220.75 and 3,456

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Solution

The third proportional to 2,220.75 and 3,456 is: 5,378.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.75 : 3,456 = 3,456 : x
  2. Step 2: Convert to fraction form
    2,220.75/3,456 = 3,456/x
  3. Step 3: Cross multiply
    2,220.75x = 3,456 × 3,456
  4. Step 4: Simplify right side
    2,220.75x = 11,943,936
  5. Step 5: Solve for x
    x = 11,943,936/2,220.75
  6. Step 6: Final answer
    x = 5,378.33

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.