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Finding the Third Proportional to 2,220.75 and 3,422.25

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Solution

The third proportional to 2,220.75 and 3,422.25 is: 5,273.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.75 : 3,422.25 = 3,422.25 : x
  2. Step 2: Convert to fraction form
    2,220.75/3,422.25 = 3,422.25/x
  3. Step 3: Cross multiply
    2,220.75x = 3,422.25 × 3,422.25
  4. Step 4: Simplify right side
    2,220.75x = 11,711,795.06
  5. Step 5: Solve for x
    x = 11,711,795.06/2,220.75
  6. Step 6: Final answer
    x = 5,273.80

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.