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Finding the Third Proportional to 2,689.50 and 5,102.25

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Solution

The third proportional to 2,689.50 and 5,102.25 is: 9,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.50 : 5,102.25 = 5,102.25 : x
  2. Step 2: Convert to fraction form
    2,689.50/5,102.25 = 5,102.25/x
  3. Step 3: Cross multiply
    2,689.50x = 5,102.25 × 5,102.25
  4. Step 4: Simplify right side
    2,689.50x = 26,032,955.06
  5. Step 5: Solve for x
    x = 26,032,955.06/2,689.50
  6. Step 6: Final answer
    x = 9,679.48

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.