Home / 3,131.37-4,694.49-1,375.11

Finding the Fourth Proportional to 3,131.37, 4,694.49 and 1,375.11

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Solution

The fourth proportional to 3,131.37, 4,694.49 and 1,375.11 is: 2,061.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.37 : 4,694.49 = 1,375.11 : x
  2. Step 2: Convert to fraction form
    3,131.37/4,694.49 = 1,375.11/x
  3. Step 3: Cross multiply
    3,131.37x = 4,694.49 × 1,375.11
  4. Step 4: Simplify right side
    3,131.37x = 6,455,440.14
  5. Step 5: Solve for x
    x = 6,455,440.14/3,131.37
  6. Step 6: Final answer
    x = 2,061.54

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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.