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Finding the Third Proportional to 6,398 and 8,644

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Solution

The third proportional to 6,398 and 8,644 is: 11,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398 : 8,644 = 8,644 : x
  2. Step 2: Convert to fraction form
    6,398/8,644 = 8,644/x
  3. Step 3: Cross multiply
    6,398x = 8,644 × 8,644
  4. Step 4: Simplify right side
    6,398x = 74,718,736
  5. Step 5: Solve for x
    x = 74,718,736/6,398
  6. Step 6: Final answer
    x = 11,678.45

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.