Home / 3,183.41-4,771.37-1,867.80

Finding the Fourth Proportional to 3,183.41, 4,771.37 and 1,867.80

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Solution

The fourth proportional to 3,183.41, 4,771.37 and 1,867.80 is: 2,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.41 : 4,771.37 = 1,867.80 : x
  2. Step 2: Convert to fraction form
    3,183.41/4,771.37 = 1,867.80/x
  3. Step 3: Cross multiply
    3,183.41x = 4,771.37 × 1,867.80
  4. Step 4: Simplify right side
    3,183.41x = 8,911,964.89
  5. Step 5: Solve for x
    x = 8,911,964.89/3,183.41
  6. Step 6: Final answer
    x = 2,799.50

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Double scale
Find fourth proportional to 3,184.41, 4,772.87 and 1,868.80
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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.