Home / 3,183.20-4,774.80-2,211.20

Finding the Fourth Proportional to 3,183.20, 4,774.80 and 2,211.20

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Solution

The fourth proportional to 3,183.20, 4,774.80 and 2,211.20 is: 3,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.20 : 4,774.80 = 2,211.20 : x
  2. Step 2: Convert to fraction form
    3,183.20/4,774.80 = 2,211.20/x
  3. Step 3: Cross multiply
    3,183.20x = 4,774.80 × 2,211.20
  4. Step 4: Simplify right side
    3,183.20x = 10,558,037.76
  5. Step 5: Solve for x
    x = 10,558,037.76/3,183.20
  6. Step 6: Final answer
    x = 3,316.80

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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.