Home / 3,932.94-5,428.23-2,255.47

Finding the Fourth Proportional to 3,932.94, 5,428.23 and 2,255.47

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Solution

The fourth proportional to 3,932.94, 5,428.23 and 2,255.47 is: 3,112.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.94 : 5,428.23 = 2,255.47 : x
  2. Step 2: Convert to fraction form
    3,932.94/5,428.23 = 2,255.47/x
  3. Step 3: Cross multiply
    3,932.94x = 5,428.23 × 2,255.47
  4. Step 4: Simplify right side
    3,932.94x = 12,243,209.92
  5. Step 5: Solve for x
    x = 12,243,209.92/3,932.94
  6. Step 6: Final answer
    x = 3,112.99

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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.