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Finding the Third Proportional to 3,399 and 7,447

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Solution

The third proportional to 3,399 and 7,447 is: 16,315.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399 : 7,447 = 7,447 : x
  2. Step 2: Convert to fraction form
    3,399/7,447 = 7,447/x
  3. Step 3: Cross multiply
    3,399x = 7,447 × 7,447
  4. Step 4: Simplify right side
    3,399x = 55,457,809
  5. Step 5: Solve for x
    x = 55,457,809/3,399
  6. Step 6: Final answer
    x = 16,315.92

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.