Home / 3,939.24-5,908.92-3,155.58

Finding the Fourth Proportional to 3,939.24, 5,908.92 and 3,155.58

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Solution

The fourth proportional to 3,939.24, 5,908.92 and 3,155.58 is: 4,733.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.24 : 5,908.92 = 3,155.58 : x
  2. Step 2: Convert to fraction form
    3,939.24/5,908.92 = 3,155.58/x
  3. Step 3: Cross multiply
    3,939.24x = 5,908.92 × 3,155.58
  4. Step 4: Simplify right side
    3,939.24x = 18,646,069.77
  5. Step 5: Solve for x
    x = 18,646,069.77/3,939.24
  6. Step 6: Final answer
    x = 4,733.42

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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.