Home / 3,930.31-5,422.26-2,513.67

Finding the Fourth Proportional to 3,930.31, 5,422.26 and 2,513.67

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Solution

The fourth proportional to 3,930.31, 5,422.26 and 2,513.67 is: 3,467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.31 : 5,422.26 = 2,513.67 : x
  2. Step 2: Convert to fraction form
    3,930.31/5,422.26 = 2,513.67/x
  3. Step 3: Cross multiply
    3,930.31x = 5,422.26 × 2,513.67
  4. Step 4: Simplify right side
    3,930.31x = 13,629,777.75
  5. Step 5: Solve for x
    x = 13,629,777.75/3,930.31
  6. Step 6: Final answer
    x = 3,467.86

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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.