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Finding the Third Proportional to 2,949 and 6,390

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Solution

The third proportional to 2,949 and 6,390 is: 13,846.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949 : 6,390 = 6,390 : x
  2. Step 2: Convert to fraction form
    2,949/6,390 = 6,390/x
  3. Step 3: Cross multiply
    2,949x = 6,390 × 6,390
  4. Step 4: Simplify right side
    2,949x = 40,832,100
  5. Step 5: Solve for x
    x = 40,832,100/2,949
  6. Step 6: Final answer
    x = 13,846.08

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.