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Finding the Third Proportional to 982.13 and 2,212.31

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Solution

The third proportional to 982.13 and 2,212.31 is: 4,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.13 : 2,212.31 = 2,212.31 : x
  2. Step 2: Convert to fraction form
    982.13/2,212.31 = 2,212.31/x
  3. Step 3: Cross multiply
    982.13x = 2,212.31 × 2,212.31
  4. Step 4: Simplify right side
    982.13x = 4,894,326.60
  5. Step 5: Solve for x
    x = 4,894,326.60/982.13
  6. Step 6: Final answer
    x = 4,983.40

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.