Home / 3,947.36-5,921.76-2,661.44

Finding the Fourth Proportional to 3,947.36, 5,921.76 and 2,661.44

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Solution

The fourth proportional to 3,947.36, 5,921.76 and 2,661.44 is: 3,992.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.36 : 5,921.76 = 2,661.44 : x
  2. Step 2: Convert to fraction form
    3,947.36/5,921.76 = 2,661.44/x
  3. Step 3: Cross multiply
    3,947.36x = 5,921.76 × 2,661.44
  4. Step 4: Simplify right side
    3,947.36x = 15,760,408.93
  5. Step 5: Solve for x
    x = 15,760,408.93/3,947.36
  6. Step 6: Final answer
    x = 3,992.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.