Home / 3,936.16-5,431.78-2,342.44

Finding the Fourth Proportional to 3,936.16, 5,431.78 and 2,342.44

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Solution

The fourth proportional to 3,936.16, 5,431.78 and 2,342.44 is: 3,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.16 : 5,431.78 = 2,342.44 : x
  2. Step 2: Convert to fraction form
    3,936.16/5,431.78 = 2,342.44/x
  3. Step 3: Cross multiply
    3,936.16x = 5,431.78 × 2,342.44
  4. Step 4: Simplify right side
    3,936.16x = 12,723,630.56
  5. Step 5: Solve for x
    x = 12,723,630.56/3,936.16
  6. Step 6: Final answer
    x = 3,232.50

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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.