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Finding the Third Proportional to 1,812.25 and 2,749.75

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Solution

The third proportional to 1,812.25 and 2,749.75 is: 4,172.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.25 : 2,749.75 = 2,749.75 : x
  2. Step 2: Convert to fraction form
    1,812.25/2,749.75 = 2,749.75/x
  3. Step 3: Cross multiply
    1,812.25x = 2,749.75 × 2,749.75
  4. Step 4: Simplify right side
    1,812.25x = 7,561,125.06
  5. Step 5: Solve for x
    x = 7,561,125.06/1,812.25
  6. Step 6: Final answer
    x = 4,172.23

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.