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Finding the Third Proportional to 7,287.75 and 15,986.25

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Solution

The third proportional to 7,287.75 and 15,986.25 is: 35,067.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.75 : 15,986.25 = 15,986.25 : x
  2. Step 2: Convert to fraction form
    7,287.75/15,986.25 = 15,986.25/x
  3. Step 3: Cross multiply
    7,287.75x = 15,986.25 × 15,986.25
  4. Step 4: Simplify right side
    7,287.75x = 255,560,189.06
  5. Step 5: Solve for x
    x = 255,560,189.06/7,287.75
  6. Step 6: Final answer
    x = 35,067.09

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.