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Finding the Third Proportional to 3,876.19 and 6,138.28

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Solution

The third proportional to 3,876.19 and 6,138.28 is: 9,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.19 : 6,138.28 = 6,138.28 : x
  2. Step 2: Convert to fraction form
    3,876.19/6,138.28 = 6,138.28/x
  3. Step 3: Cross multiply
    3,876.19x = 6,138.28 × 6,138.28
  4. Step 4: Simplify right side
    3,876.19x = 37,678,496.70
  5. Step 5: Solve for x
    x = 37,678,496.70/3,876.19
  6. Step 6: Final answer
    x = 9,720.50

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.