Home / 3,939.20-5,435.60-2,260.38

Finding the Fourth Proportional to 3,939.20, 5,435.60 and 2,260.38

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Solution

The fourth proportional to 3,939.20, 5,435.60 and 2,260.38 is: 3,119.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.20 : 5,435.60 = 2,260.38 : x
  2. Step 2: Convert to fraction form
    3,939.20/5,435.60 = 2,260.38/x
  3. Step 3: Cross multiply
    3,939.20x = 5,435.60 × 2,260.38
  4. Step 4: Simplify right side
    3,939.20x = 12,286,510.23
  5. Step 5: Solve for x
    x = 12,286,510.23/3,939.20
  6. Step 6: Final answer
    x = 3,119.04

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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.