Home / 7,380.26-11,072.37-3,220.61

Finding the Fourth Proportional to 7,380.26, 11,072.37 and 3,220.61

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Solution

The fourth proportional to 7,380.26, 11,072.37 and 3,220.61 is: 4,831.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,380.26 : 11,072.37 = 3,220.61 : x
  2. Step 2: Convert to fraction form
    7,380.26/11,072.37 = 3,220.61/x
  3. Step 3: Cross multiply
    7,380.26x = 11,072.37 × 3,220.61
  4. Step 4: Simplify right side
    7,380.26x = 35,659,785.55
  5. Step 5: Solve for x
    x = 35,659,785.55/7,380.26
  6. Step 6: Final answer
    x = 4,831.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.