Home / 2,629.22-3,945-1,396.33

Finding the Fourth Proportional to 2,629.22, 3,945 and 1,396.33

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Solution

The fourth proportional to 2,629.22, 3,945 and 1,396.33 is: 2,095.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.22 : 3,945 = 1,396.33 : x
  2. Step 2: Convert to fraction form
    2,629.22/3,945 = 1,396.33/x
  3. Step 3: Cross multiply
    2,629.22x = 3,945 × 1,396.33
  4. Step 4: Simplify right side
    2,629.22x = 5,508,521.85
  5. Step 5: Solve for x
    x = 5,508,521.85/2,629.22
  6. Step 6: Final answer
    x = 2,095.12

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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.