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Finding the Third Proportional to 2,121.44 and 4,661.13

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Solution

The third proportional to 2,121.44 and 4,661.13 is: 10,241.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.44 : 4,661.13 = 4,661.13 : x
  2. Step 2: Convert to fraction form
    2,121.44/4,661.13 = 4,661.13/x
  3. Step 3: Cross multiply
    2,121.44x = 4,661.13 × 4,661.13
  4. Step 4: Simplify right side
    2,121.44x = 21,726,086.27
  5. Step 5: Solve for x
    x = 21,726,086.27/2,121.44
  6. Step 6: Final answer
    x = 10,241.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.