Home / 3,911.88-5,399.08-2,339.98

Finding the Fourth Proportional to 3,911.88, 5,399.08 and 2,339.98

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Solution

The fourth proportional to 3,911.88, 5,399.08 and 2,339.98 is: 3,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.88 : 5,399.08 = 2,339.98 : x
  2. Step 2: Convert to fraction form
    3,911.88/5,399.08 = 2,339.98/x
  3. Step 3: Cross multiply
    3,911.88x = 5,399.08 × 2,339.98
  4. Step 4: Simplify right side
    3,911.88x = 12,633,739.22
  5. Step 5: Solve for x
    x = 12,633,739.22/3,911.88
  6. Step 6: Final answer
    x = 3,229.58

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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.