Home / 3,930.40-5,889.66-2,629.54

Finding the Fourth Proportional to 3,930.40, 5,889.66 and 2,629.54

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Solution

The fourth proportional to 3,930.40, 5,889.66 and 2,629.54 is: 3,940.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.40 : 5,889.66 = 2,629.54 : x
  2. Step 2: Convert to fraction form
    3,930.40/5,889.66 = 2,629.54/x
  3. Step 3: Cross multiply
    3,930.40x = 5,889.66 × 2,629.54
  4. Step 4: Simplify right side
    3,930.40x = 15,487,096.56
  5. Step 5: Solve for x
    x = 15,487,096.56/3,930.40
  6. Step 6: Final answer
    x = 3,940.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.