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Finding the Third Proportional to 984.38 and 2,100.38

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Solution

The third proportional to 984.38 and 2,100.38 is: 4,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    984.38 : 2,100.38 = 2,100.38 : x
  2. Step 2: Convert to fraction form
    984.38/2,100.38 = 2,100.38/x
  3. Step 3: Cross multiply
    984.38x = 2,100.38 × 2,100.38
  4. Step 4: Simplify right side
    984.38x = 4,411,575.14
  5. Step 5: Solve for x
    x = 4,411,575.14/984.38
  6. Step 6: Final answer
    x = 4,481.60

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.