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Finding the Third Proportional to 2,965 and 6,389

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Solution

The third proportional to 2,965 and 6,389 is: 13,767.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965 : 6,389 = 6,389 : x
  2. Step 2: Convert to fraction form
    2,965/6,389 = 6,389/x
  3. Step 3: Cross multiply
    2,965x = 6,389 × 6,389
  4. Step 4: Simplify right side
    2,965x = 40,819,321
  5. Step 5: Solve for x
    x = 40,819,321/2,965
  6. Step 6: Final answer
    x = 13,767.06

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.