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Finding the Third Proportional to 4,989 and 10,965

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Solution

The third proportional to 4,989 and 10,965 is: 24,099.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,989 : 10,965 = 10,965 : x
  2. Step 2: Convert to fraction form
    4,989/10,965 = 10,965/x
  3. Step 3: Cross multiply
    4,989x = 10,965 × 10,965
  4. Step 4: Simplify right side
    4,989x = 120,231,225
  5. Step 5: Solve for x
    x = 120,231,225/4,989
  6. Step 6: Final answer
    x = 24,099.26

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.