Home / 3,991.08-5,507.79-2,222.58

Finding the Fourth Proportional to 3,991.08, 5,507.79 and 2,222.58

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Solution

The fourth proportional to 3,991.08, 5,507.79 and 2,222.58 is: 3,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.08 : 5,507.79 = 2,222.58 : x
  2. Step 2: Convert to fraction form
    3,991.08/5,507.79 = 2,222.58/x
  3. Step 3: Cross multiply
    3,991.08x = 5,507.79 × 2,222.58
  4. Step 4: Simplify right side
    3,991.08x = 12,241,503.90
  5. Step 5: Solve for x
    x = 12,241,503.90/3,991.08
  6. Step 6: Final answer
    x = 3,067.22

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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.