Home / 3,839.68-5,299.08-2,138.41

Finding the Fourth Proportional to 3,839.68, 5,299.08 and 2,138.41

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Solution

The fourth proportional to 3,839.68, 5,299.08 and 2,138.41 is: 2,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.68 : 5,299.08 = 2,138.41 : x
  2. Step 2: Convert to fraction form
    3,839.68/5,299.08 = 2,138.41/x
  3. Step 3: Cross multiply
    3,839.68x = 5,299.08 × 2,138.41
  4. Step 4: Simplify right side
    3,839.68x = 11,331,584.40
  5. Step 5: Solve for x
    x = 11,331,584.40/3,839.68
  6. Step 6: Final answer
    x = 2,951.18

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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.