Home / 3,139.54-4,327.94-2,392.20

Finding the Fourth Proportional to 3,139.54, 4,327.94 and 2,392.20

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Solution

The fourth proportional to 3,139.54, 4,327.94 and 2,392.20 is: 3,297.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.54 : 4,327.94 = 2,392.20 : x
  2. Step 2: Convert to fraction form
    3,139.54/4,327.94 = 2,392.20/x
  3. Step 3: Cross multiply
    3,139.54x = 4,327.94 × 2,392.20
  4. Step 4: Simplify right side
    3,139.54x = 10,353,286.11
  5. Step 5: Solve for x
    x = 10,353,286.11/3,139.54
  6. Step 6: Final answer
    x = 3,297.71

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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.