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Finding the Third Proportional to 3,330.75 and 7,178.25

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Solution

The third proportional to 3,330.75 and 7,178.25 is: 15,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.75 : 7,178.25 = 7,178.25 : x
  2. Step 2: Convert to fraction form
    3,330.75/7,178.25 = 7,178.25/x
  3. Step 3: Cross multiply
    3,330.75x = 7,178.25 × 7,178.25
  4. Step 4: Simplify right side
    3,330.75x = 51,527,273.06
  5. Step 5: Solve for x
    x = 51,527,273.06/3,330.75
  6. Step 6: Final answer
    x = 15,470.17

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.