Home / 3,930.17-5,423.42-2,161.44

Finding the Fourth Proportional to 3,930.17, 5,423.42 and 2,161.44

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Solution

The fourth proportional to 3,930.17, 5,423.42 and 2,161.44 is: 2,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.17 : 5,423.42 = 2,161.44 : x
  2. Step 2: Convert to fraction form
    3,930.17/5,423.42 = 2,161.44/x
  3. Step 3: Cross multiply
    3,930.17x = 5,423.42 × 2,161.44
  4. Step 4: Simplify right side
    3,930.17x = 11,722,386.12
  5. Step 5: Solve for x
    x = 11,722,386.12/3,930.17
  6. Step 6: Final answer
    x = 2,982.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.