Home / 5,131.97-7,691.57-2,355.69

Finding the Fourth Proportional to 5,131.97, 7,691.57 and 2,355.69

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Solution

The fourth proportional to 5,131.97, 7,691.57 and 2,355.69 is: 3,530.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.97 : 7,691.57 = 2,355.69 : x
  2. Step 2: Convert to fraction form
    5,131.97/7,691.57 = 2,355.69/x
  3. Step 3: Cross multiply
    5,131.97x = 7,691.57 × 2,355.69
  4. Step 4: Simplify right side
    5,131.97x = 18,118,942.75
  5. Step 5: Solve for x
    x = 18,118,942.75/5,131.97
  6. Step 6: Final answer
    x = 3,530.61

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1.5x scale

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.