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Finding the Third Proportional to 1,138.13 and 1,707.38

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Solution

The third proportional to 1,138.13 and 1,707.38 is: 2,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138.13 : 1,707.38 = 1,707.38 : x
  2. Step 2: Convert to fraction form
    1,138.13/1,707.38 = 1,707.38/x
  3. Step 3: Cross multiply
    1,138.13x = 1,707.38 × 1,707.38
  4. Step 4: Simplify right side
    1,138.13x = 2,915,129.39
  5. Step 5: Solve for x
    x = 2,915,129.39/1,138.13
  6. Step 6: Final answer
    x = 2,561.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.