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Finding the Third Proportional to 3,642.75 and 4,209.75

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Solution

The third proportional to 3,642.75 and 4,209.75 is: 4,865.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,642.75 : 4,209.75 = 4,209.75 : x
  2. Step 2: Convert to fraction form
    3,642.75/4,209.75 = 4,209.75/x
  3. Step 3: Cross multiply
    3,642.75x = 4,209.75 × 4,209.75
  4. Step 4: Simplify right side
    3,642.75x = 17,721,995.06
  5. Step 5: Solve for x
    x = 17,721,995.06/3,642.75
  6. Step 6: Final answer
    x = 4,865.00

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Why These Related Problems?

These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.