Home / 2,286.05-3,154.76-1,238.12

Finding the Fourth Proportional to 2,286.05, 3,154.76 and 1,238.12

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Solution

The fourth proportional to 2,286.05, 3,154.76 and 1,238.12 is: 1,708.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.05 : 3,154.76 = 1,238.12 : x
  2. Step 2: Convert to fraction form
    2,286.05/3,154.76 = 1,238.12/x
  3. Step 3: Cross multiply
    2,286.05x = 3,154.76 × 1,238.12
  4. Step 4: Simplify right side
    2,286.05x = 3,905,949.49
  5. Step 5: Solve for x
    x = 3,905,949.49/2,286.05
  6. Step 6: Final answer
    x = 1,708.61

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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.