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Finding the Third Proportional to 6,387 and 11,886

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Solution

The third proportional to 6,387 and 11,886 is: 22,119.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387 : 11,886 = 11,886 : x
  2. Step 2: Convert to fraction form
    6,387/11,886 = 11,886/x
  3. Step 3: Cross multiply
    6,387x = 11,886 × 11,886
  4. Step 4: Simplify right side
    6,387x = 141,276,996
  5. Step 5: Solve for x
    x = 141,276,996/6,387
  6. Step 6: Final answer
    x = 22,119.46

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.