Home / 3,930.42-5,424.27-2,162.07

Finding the Fourth Proportional to 3,930.42, 5,424.27 and 2,162.07

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Solution

The fourth proportional to 3,930.42, 5,424.27 and 2,162.07 is: 2,983.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.42 : 5,424.27 = 2,162.07 : x
  2. Step 2: Convert to fraction form
    3,930.42/5,424.27 = 2,162.07/x
  3. Step 3: Cross multiply
    3,930.42x = 5,424.27 × 2,162.07
  4. Step 4: Simplify right side
    3,930.42x = 11,727,651.44
  5. Step 5: Solve for x
    x = 11,727,651.44/3,930.42
  6. Step 6: Final answer
    x = 2,983.82

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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.