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Finding the Third Proportional to 1,945.90 and 4,147.14

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Solution

The third proportional to 1,945.90 and 4,147.14 is: 8,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.90 : 4,147.14 = 4,147.14 : x
  2. Step 2: Convert to fraction form
    1,945.90/4,147.14 = 4,147.14/x
  3. Step 3: Cross multiply
    1,945.90x = 4,147.14 × 4,147.14
  4. Step 4: Simplify right side
    1,945.90x = 17,198,742.96
  5. Step 5: Solve for x
    x = 17,198,742.96/1,945.90
  6. Step 6: Final answer
    x = 8,838.46

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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.