Home / 7,123.20-10,695.60-5,481.60

Finding the Fourth Proportional to 7,123.20, 10,695.60 and 5,481.60

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Solution

The fourth proportional to 7,123.20, 10,695.60 and 5,481.60 is: 8,230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.20 : 10,695.60 = 5,481.60 : x
  2. Step 2: Convert to fraction form
    7,123.20/10,695.60 = 5,481.60/x
  3. Step 3: Cross multiply
    7,123.20x = 10,695.60 × 5,481.60
  4. Step 4: Simplify right side
    7,123.20x = 58,629,000.96
  5. Step 5: Solve for x
    x = 58,629,000.96/7,123.20
  6. Step 6: Final answer
    x = 8,230.71

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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.