Home / 2,125.20-3,183.74-1,245.54

Finding the Fourth Proportional to 2,125.20, 3,183.74 and 1,245.54

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Solution

The fourth proportional to 2,125.20, 3,183.74 and 1,245.54 is: 1,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.20 : 3,183.74 = 1,245.54 : x
  2. Step 2: Convert to fraction form
    2,125.20/3,183.74 = 1,245.54/x
  3. Step 3: Cross multiply
    2,125.20x = 3,183.74 × 1,245.54
  4. Step 4: Simplify right side
    2,125.20x = 3,965,475.52
  5. Step 5: Solve for x
    x = 3,965,475.52/2,125.20
  6. Step 6: Final answer
    x = 1,865.93

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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.