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Finding the Third Proportional to 3,869 and 9,126.50

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Solution

The third proportional to 3,869 and 9,126.50 is: 21,528.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869 : 9,126.50 = 9,126.50 : x
  2. Step 2: Convert to fraction form
    3,869/9,126.50 = 9,126.50/x
  3. Step 3: Cross multiply
    3,869x = 9,126.50 × 9,126.50
  4. Step 4: Simplify right side
    3,869x = 83,293,002.25
  5. Step 5: Solve for x
    x = 83,293,002.25/3,869
  6. Step 6: Final answer
    x = 21,528.30

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.