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Finding the Fourth Proportional to 7,200.92, 10,794.90 and 2,821.52

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Solution

The fourth proportional to 7,200.92, 10,794.90 and 2,821.52 is: 4,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.92 : 10,794.90 = 2,821.52 : x
  2. Step 2: Convert to fraction form
    7,200.92/10,794.90 = 2,821.52/x
  3. Step 3: Cross multiply
    7,200.92x = 10,794.90 × 2,821.52
  4. Step 4: Simplify right side
    7,200.92x = 30,458,026.25
  5. Step 5: Solve for x
    x = 30,458,026.25/7,200.92
  6. Step 6: Final answer
    x = 4,229.74

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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.