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Finding the Third Proportional to 3,198.50 and 7,477

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Solution

The third proportional to 3,198.50 and 7,477 is: 17,478.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,198.50 : 7,477 = 7,477 : x
  2. Step 2: Convert to fraction form
    3,198.50/7,477 = 7,477/x
  3. Step 3: Cross multiply
    3,198.50x = 7,477 × 7,477
  4. Step 4: Simplify right side
    3,198.50x = 55,905,529
  5. Step 5: Solve for x
    x = 55,905,529/3,198.50
  6. Step 6: Final answer
    x = 17,478.67

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.