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Finding the Third Proportional to 6,389 and 6,965

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Solution

The third proportional to 6,389 and 6,965 is: 7,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389 : 6,965 = 6,965 : x
  2. Step 2: Convert to fraction form
    6,389/6,965 = 6,965/x
  3. Step 3: Cross multiply
    6,389x = 6,965 × 6,965
  4. Step 4: Simplify right side
    6,389x = 48,511,225
  5. Step 5: Solve for x
    x = 48,511,225/6,389
  6. Step 6: Final answer
    x = 7,592.93

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.