Home / 3,211.71-4,818.87-1,131.99

Finding the Fourth Proportional to 3,211.71, 4,818.87 and 1,131.99

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Solution

The fourth proportional to 3,211.71, 4,818.87 and 1,131.99 is: 1,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.71 : 4,818.87 = 1,131.99 : x
  2. Step 2: Convert to fraction form
    3,211.71/4,818.87 = 1,131.99/x
  3. Step 3: Cross multiply
    3,211.71x = 4,818.87 × 1,131.99
  4. Step 4: Simplify right side
    3,211.71x = 5,454,912.65
  5. Step 5: Solve for x
    x = 5,454,912.65/3,211.71
  6. Step 6: Final answer
    x = 1,698.44

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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.