Home / 3,990.94-5,507.53-2,222.71

Finding the Fourth Proportional to 3,990.94, 5,507.53 and 2,222.71

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Solution

The fourth proportional to 3,990.94, 5,507.53 and 2,222.71 is: 3,067.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.94 : 5,507.53 = 2,222.71 : x
  2. Step 2: Convert to fraction form
    3,990.94/5,507.53 = 2,222.71/x
  3. Step 3: Cross multiply
    3,990.94x = 5,507.53 × 2,222.71
  4. Step 4: Simplify right side
    3,990.94x = 12,241,622.68
  5. Step 5: Solve for x
    x = 12,241,622.68/3,990.94
  6. Step 6: Final answer
    x = 3,067.36

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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.