Home / 3,936.43-5,426.83-2,815.41

Finding the Fourth Proportional to 3,936.43, 5,426.83 and 2,815.41

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Solution

The fourth proportional to 3,936.43, 5,426.83 and 2,815.41 is: 3,881.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.43 : 5,426.83 = 2,815.41 : x
  2. Step 2: Convert to fraction form
    3,936.43/5,426.83 = 2,815.41/x
  3. Step 3: Cross multiply
    3,936.43x = 5,426.83 × 2,815.41
  4. Step 4: Simplify right side
    3,936.43x = 15,278,744.41
  5. Step 5: Solve for x
    x = 15,278,744.41/3,936.43
  6. Step 6: Final answer
    x = 3,881.37

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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.