Home / 3,188.81-4,399.84-1,791.47

Finding the Fourth Proportional to 3,188.81, 4,399.84 and 1,791.47

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Solution

The fourth proportional to 3,188.81, 4,399.84 and 1,791.47 is: 2,471.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.81 : 4,399.84 = 1,791.47 : x
  2. Step 2: Convert to fraction form
    3,188.81/4,399.84 = 1,791.47/x
  3. Step 3: Cross multiply
    3,188.81x = 4,399.84 × 1,791.47
  4. Step 4: Simplify right side
    3,188.81x = 7,882,181.36
  5. Step 5: Solve for x
    x = 7,882,181.36/3,188.81
  6. Step 6: Final answer
    x = 2,471.83

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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.