Home / 2,286.70-3,155.66-1,238.77

Finding the Fourth Proportional to 2,286.70, 3,155.66 and 1,238.77

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Solution

The fourth proportional to 2,286.70, 3,155.66 and 1,238.77 is: 1,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.70 : 3,155.66 = 1,238.77 : x
  2. Step 2: Convert to fraction form
    2,286.70/3,155.66 = 1,238.77/x
  3. Step 3: Cross multiply
    2,286.70x = 3,155.66 × 1,238.77
  4. Step 4: Simplify right side
    2,286.70x = 3,909,121.58
  5. Step 5: Solve for x
    x = 3,909,121.58/2,286.70
  6. Step 6: Final answer
    x = 1,709.50

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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.