Home / 7,378.26-11,069.37-3,218.61

Finding the Fourth Proportional to 7,378.26, 11,069.37 and 3,218.61

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Solution

The fourth proportional to 7,378.26, 11,069.37 and 3,218.61 is: 4,828.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.26 : 11,069.37 = 3,218.61 : x
  2. Step 2: Convert to fraction form
    7,378.26/11,069.37 = 3,218.61/x
  3. Step 3: Cross multiply
    7,378.26x = 11,069.37 × 3,218.61
  4. Step 4: Simplify right side
    7,378.26x = 35,627,984.98
  5. Step 5: Solve for x
    x = 35,627,984.98/7,378.26
  6. Step 6: Final answer
    x = 4,828.78

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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.