Home / 3,918.91-5,407.92-2,150.48

Finding the Fourth Proportional to 3,918.91, 5,407.92 and 2,150.48

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Solution

The fourth proportional to 3,918.91, 5,407.92 and 2,150.48 is: 2,967.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.91 : 5,407.92 = 2,150.48 : x
  2. Step 2: Convert to fraction form
    3,918.91/5,407.92 = 2,150.48/x
  3. Step 3: Cross multiply
    3,918.91x = 5,407.92 × 2,150.48
  4. Step 4: Simplify right side
    3,918.91x = 11,629,586.01
  5. Step 5: Solve for x
    x = 11,629,586.01/3,918.91
  6. Step 6: Final answer
    x = 2,967.56

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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.