Home / 3,991.29-5,507.87-2,222.85

Finding the Fourth Proportional to 3,991.29, 5,507.87 and 2,222.85

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Solution

The fourth proportional to 3,991.29, 5,507.87 and 2,222.85 is: 3,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.29 : 5,507.87 = 2,222.85 : x
  2. Step 2: Convert to fraction form
    3,991.29/5,507.87 = 2,222.85/x
  3. Step 3: Cross multiply
    3,991.29x = 5,507.87 × 2,222.85
  4. Step 4: Simplify right side
    3,991.29x = 12,243,157.72
  5. Step 5: Solve for x
    x = 12,243,157.72/3,991.29
  6. Step 6: Final answer
    x = 3,067.47

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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.