Home / 3,930.64-5,424.18-2,162.26

Finding the Fourth Proportional to 3,930.64, 5,424.18 and 2,162.26

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Solution

The fourth proportional to 3,930.64, 5,424.18 and 2,162.26 is: 2,983.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.64 : 5,424.18 = 2,162.26 : x
  2. Step 2: Convert to fraction form
    3,930.64/5,424.18 = 2,162.26/x
  3. Step 3: Cross multiply
    3,930.64x = 5,424.18 × 2,162.26
  4. Step 4: Simplify right side
    3,930.64x = 11,728,487.45
  5. Step 5: Solve for x
    x = 11,728,487.45/3,930.64
  6. Step 6: Final answer
    x = 2,983.86

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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.