Home / 3,183.40-4,772.78-2,140.81

Finding the Fourth Proportional to 3,183.40, 4,772.78 and 2,140.81

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Solution

The fourth proportional to 3,183.40, 4,772.78 and 2,140.81 is: 3,209.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.40 : 4,772.78 = 2,140.81 : x
  2. Step 2: Convert to fraction form
    3,183.40/4,772.78 = 2,140.81/x
  3. Step 3: Cross multiply
    3,183.40x = 4,772.78 × 2,140.81
  4. Step 4: Simplify right side
    3,183.40x = 10,217,580.58
  5. Step 5: Solve for x
    x = 10,217,580.58/3,183.40
  6. Step 6: Final answer
    x = 3,209.65

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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.