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Finding the Third Proportional to 3,438 and 7,185

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Solution

The third proportional to 3,438 and 7,185 is: 15,015.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438 : 7,185 = 7,185 : x
  2. Step 2: Convert to fraction form
    3,438/7,185 = 7,185/x
  3. Step 3: Cross multiply
    3,438x = 7,185 × 7,185
  4. Step 4: Simplify right side
    3,438x = 51,624,225
  5. Step 5: Solve for x
    x = 51,624,225/3,438
  6. Step 6: Final answer
    x = 15,015.77

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.