Home / 3,930.48-5,424.21-2,162.03

Finding the Fourth Proportional to 3,930.48, 5,424.21 and 2,162.03

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Solution

The fourth proportional to 3,930.48, 5,424.21 and 2,162.03 is: 2,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.48 : 5,424.21 = 2,162.03 : x
  2. Step 2: Convert to fraction form
    3,930.48/5,424.21 = 2,162.03/x
  3. Step 3: Cross multiply
    3,930.48x = 5,424.21 × 2,162.03
  4. Step 4: Simplify right side
    3,930.48x = 11,727,277.63
  5. Step 5: Solve for x
    x = 11,727,277.63/3,930.48
  6. Step 6: Final answer
    x = 2,983.68

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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.