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Finding the Third Proportional to 939 and 2,173.73

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Solution

The third proportional to 939 and 2,173.73 is: 5,032.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    939 : 2,173.73 = 2,173.73 : x
  2. Step 2: Convert to fraction form
    939/2,173.73 = 2,173.73/x
  3. Step 3: Cross multiply
    939x = 2,173.73 × 2,173.73
  4. Step 4: Simplify right side
    939x = 4,725,121.13
  5. Step 5: Solve for x
    x = 4,725,121.13/939
  6. Step 6: Final answer
    x = 5,032.08

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.