Home / 3,183.20-4,391.52-2,135.60

Finding the Fourth Proportional to 3,183.20, 4,391.52 and 2,135.60

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Solution

The fourth proportional to 3,183.20, 4,391.52 and 2,135.60 is: 2,946.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.20 : 4,391.52 = 2,135.60 : x
  2. Step 2: Convert to fraction form
    3,183.20/4,391.52 = 2,135.60/x
  3. Step 3: Cross multiply
    3,183.20x = 4,391.52 × 2,135.60
  4. Step 4: Simplify right side
    3,183.20x = 9,378,530.11
  5. Step 5: Solve for x
    x = 9,378,530.11/3,183.20
  6. Step 6: Final answer
    x = 2,946.26

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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.