Home / 3,939.15-5,439.20-2,682.84

Finding the Fourth Proportional to 3,939.15, 5,439.20 and 2,682.84

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Solution

The fourth proportional to 3,939.15, 5,439.20 and 2,682.84 is: 3,704.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.15 : 5,439.20 = 2,682.84 : x
  2. Step 2: Convert to fraction form
    3,939.15/5,439.20 = 2,682.84/x
  3. Step 3: Cross multiply
    3,939.15x = 5,439.20 × 2,682.84
  4. Step 4: Simplify right side
    3,939.15x = 14,592,489.91
  5. Step 5: Solve for x
    x = 14,592,489.91/3,939.15
  6. Step 6: Final answer
    x = 3,704.48

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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.