Home / 4,921.92-6,793.20-3,155.76

Finding the Fourth Proportional to 4,921.92, 6,793.20 and 3,155.76

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Solution

The fourth proportional to 4,921.92, 6,793.20 and 3,155.76 is: 4,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.92 : 6,793.20 = 3,155.76 : x
  2. Step 2: Convert to fraction form
    4,921.92/6,793.20 = 3,155.76/x
  3. Step 3: Cross multiply
    4,921.92x = 6,793.20 × 3,155.76
  4. Step 4: Simplify right side
    4,921.92x = 21,437,708.83
  5. Step 5: Solve for x
    x = 21,437,708.83/4,921.92
  6. Step 6: Final answer
    x = 4,355.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.