Home / 3,991.42-5,507.96-2,198.84

Finding the Fourth Proportional to 3,991.42, 5,507.96 and 2,198.84

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Solution

The fourth proportional to 3,991.42, 5,507.96 and 2,198.84 is: 3,034.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.42 : 5,507.96 = 2,198.84 : x
  2. Step 2: Convert to fraction form
    3,991.42/5,507.96 = 2,198.84/x
  3. Step 3: Cross multiply
    3,991.42x = 5,507.96 × 2,198.84
  4. Step 4: Simplify right side
    3,991.42x = 12,111,122.77
  5. Step 5: Solve for x
    x = 12,111,122.77/3,991.42
  6. Step 6: Final answer
    x = 3,034.29

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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.