Home / 3,936.36-5,431.86-2,257.68

Finding the Fourth Proportional to 3,936.36, 5,431.86 and 2,257.68

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Solution

The fourth proportional to 3,936.36, 5,431.86 and 2,257.68 is: 3,115.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.36 : 5,431.86 = 2,257.68 : x
  2. Step 2: Convert to fraction form
    3,936.36/5,431.86 = 2,257.68/x
  3. Step 3: Cross multiply
    3,936.36x = 5,431.86 × 2,257.68
  4. Step 4: Simplify right side
    3,936.36x = 12,263,401.68
  5. Step 5: Solve for x
    x = 12,263,401.68/3,936.36
  6. Step 6: Final answer
    x = 3,115.42

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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.