Home / 3,131.18-4,311.19-2,658.09

Finding the Fourth Proportional to 3,131.18, 4,311.19 and 2,658.09

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Solution

The fourth proportional to 3,131.18, 4,311.19 and 2,658.09 is: 3,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.18 : 4,311.19 = 2,658.09 : x
  2. Step 2: Convert to fraction form
    3,131.18/4,311.19 = 2,658.09/x
  3. Step 3: Cross multiply
    3,131.18x = 4,311.19 × 2,658.09
  4. Step 4: Simplify right side
    3,131.18x = 11,459,550.52
  5. Step 5: Solve for x
    x = 11,459,550.52/3,131.18
  6. Step 6: Final answer
    x = 3,659.82

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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.