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Finding the Third Proportional to 2,161.13 and 3,642.75

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Solution

The third proportional to 2,161.13 and 3,642.75 is: 6,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.13 : 3,642.75 = 3,642.75 : x
  2. Step 2: Convert to fraction form
    2,161.13/3,642.75 = 3,642.75/x
  3. Step 3: Cross multiply
    2,161.13x = 3,642.75 × 3,642.75
  4. Step 4: Simplify right side
    2,161.13x = 13,269,627.56
  5. Step 5: Solve for x
    x = 13,269,627.56/2,161.13
  6. Step 6: Final answer
    x = 6,140.15

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.