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Finding the Third Proportional to 982.13 and 2,131.31

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Solution

The third proportional to 982.13 and 2,131.31 is: 4,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.13 : 2,131.31 = 2,131.31 : x
  2. Step 2: Convert to fraction form
    982.13/2,131.31 = 2,131.31/x
  3. Step 3: Cross multiply
    982.13x = 2,131.31 × 2,131.31
  4. Step 4: Simplify right side
    982.13x = 4,542,492.97
  5. Step 5: Solve for x
    x = 4,542,492.97/982.13
  6. Step 6: Final answer
    x = 4,625.17

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.