Home / 3,131.62-4,311.79-2,658.58

Finding the Fourth Proportional to 3,131.62, 4,311.79 and 2,658.58

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Solution

The fourth proportional to 3,131.62, 4,311.79 and 2,658.58 is: 3,660.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.62 : 4,311.79 = 2,658.58 : x
  2. Step 2: Convert to fraction form
    3,131.62/4,311.79 = 2,658.58/x
  3. Step 3: Cross multiply
    3,131.62x = 4,311.79 × 2,658.58
  4. Step 4: Simplify right side
    3,131.62x = 11,463,238.66
  5. Step 5: Solve for x
    x = 11,463,238.66/3,131.62
  6. Step 6: Final answer
    x = 3,660.48

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1.5x scale

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.