Home / 3,183.36-4,775.66-991.99

Finding the Fourth Proportional to 3,183.36, 4,775.66 and 991.99

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Solution

The fourth proportional to 3,183.36, 4,775.66 and 991.99 is: 1,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.36 : 4,775.66 = 991.99 : x
  2. Step 2: Convert to fraction form
    3,183.36/4,775.66 = 991.99/x
  3. Step 3: Cross multiply
    3,183.36x = 4,775.66 × 991.99
  4. Step 4: Simplify right side
    3,183.36x = 4,737,406.96
  5. Step 5: Solve for x
    x = 4,737,406.96/3,183.36
  6. Step 6: Final answer
    x = 1,488.18

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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.