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Finding the Fourth Proportional to 7,227.20, 10,828.20 and 3,323.60

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Solution

The fourth proportional to 7,227.20, 10,828.20 and 3,323.60 is: 4,979.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,227.20 : 10,828.20 = 3,323.60 : x
  2. Step 2: Convert to fraction form
    7,227.20/10,828.20 = 3,323.60/x
  3. Step 3: Cross multiply
    7,227.20x = 10,828.20 × 3,323.60
  4. Step 4: Simplify right side
    7,227.20x = 35,988,605.52
  5. Step 5: Solve for x
    x = 35,988,605.52/7,227.20
  6. Step 6: Final answer
    x = 4,979.61

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1.5x scale

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.