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Finding the Third Proportional to 3,222 and 7,645

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Solution

The third proportional to 3,222 and 7,645 is: 18,139.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,222 : 7,645 = 7,645 : x
  2. Step 2: Convert to fraction form
    3,222/7,645 = 7,645/x
  3. Step 3: Cross multiply
    3,222x = 7,645 × 7,645
  4. Step 4: Simplify right side
    3,222x = 58,446,025
  5. Step 5: Solve for x
    x = 58,446,025/3,222
  6. Step 6: Final answer
    x = 18,139.67

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.