Home / 3,932.85-5,420.78-3,373.95

Finding the Fourth Proportional to 3,932.85, 5,420.78 and 3,373.95

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Solution

The fourth proportional to 3,932.85, 5,420.78 and 3,373.95 is: 4,650.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.85 : 5,420.78 = 3,373.95 : x
  2. Step 2: Convert to fraction form
    3,932.85/5,420.78 = 3,373.95/x
  3. Step 3: Cross multiply
    3,932.85x = 5,420.78 × 3,373.95
  4. Step 4: Simplify right side
    3,932.85x = 18,289,396.71
  5. Step 5: Solve for x
    x = 18,289,396.71/3,932.85
  6. Step 6: Final answer
    x = 4,650.42

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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.