Home / 3,936.32-5,431.95-2,256.56

Finding the Fourth Proportional to 3,936.32, 5,431.95 and 2,256.56

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Solution

The fourth proportional to 3,936.32, 5,431.95 and 2,256.56 is: 3,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.32 : 5,431.95 = 2,256.56 : x
  2. Step 2: Convert to fraction form
    3,936.32/5,431.95 = 2,256.56/x
  3. Step 3: Cross multiply
    3,936.32x = 5,431.95 × 2,256.56
  4. Step 4: Simplify right side
    3,936.32x = 12,257,493.93
  5. Step 5: Solve for x
    x = 12,257,493.93/3,936.32
  6. Step 6: Final answer
    x = 3,113.95

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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.