Home / 2,311.66-3,190.11-1,263.73

Finding the Fourth Proportional to 2,311.66, 3,190.11 and 1,263.73

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Solution

The fourth proportional to 2,311.66, 3,190.11 and 1,263.73 is: 1,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.66 : 3,190.11 = 1,263.73 : x
  2. Step 2: Convert to fraction form
    2,311.66/3,190.11 = 1,263.73/x
  3. Step 3: Cross multiply
    2,311.66x = 3,190.11 × 1,263.73
  4. Step 4: Simplify right side
    2,311.66x = 4,031,425.56
  5. Step 5: Solve for x
    x = 4,031,425.56/2,311.66
  6. Step 6: Final answer
    x = 1,743.95

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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.