Home / 3,890.92-5,369.44-2,122.52

Finding the Fourth Proportional to 3,890.92, 5,369.44 and 2,122.52

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Solution

The fourth proportional to 3,890.92, 5,369.44 and 2,122.52 is: 2,929.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.92 : 5,369.44 = 2,122.52 : x
  2. Step 2: Convert to fraction form
    3,890.92/5,369.44 = 2,122.52/x
  3. Step 3: Cross multiply
    3,890.92x = 5,369.44 × 2,122.52
  4. Step 4: Simplify right side
    3,890.92x = 11,396,743.79
  5. Step 5: Solve for x
    x = 11,396,743.79/3,890.92
  6. Step 6: Final answer
    x = 2,929.06

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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.