Home / 2,286.31-3,155.11-1,238.37

Finding the Fourth Proportional to 2,286.31, 3,155.11 and 1,238.37

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Solution

The fourth proportional to 2,286.31, 3,155.11 and 1,238.37 is: 1,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.31 : 3,155.11 = 1,238.37 : x
  2. Step 2: Convert to fraction form
    2,286.31/3,155.11 = 1,238.37/x
  3. Step 3: Cross multiply
    2,286.31x = 3,155.11 × 1,238.37
  4. Step 4: Simplify right side
    2,286.31x = 3,907,190.47
  5. Step 5: Solve for x
    x = 3,907,190.47/2,286.31
  6. Step 6: Final answer
    x = 1,708.95

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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.