Home / 2,286.86-3,155.87-1,238.92

Finding the Fourth Proportional to 2,286.86, 3,155.87 and 1,238.92

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Solution

The fourth proportional to 2,286.86, 3,155.87 and 1,238.92 is: 1,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.86 : 3,155.87 = 1,238.92 : x
  2. Step 2: Convert to fraction form
    2,286.86/3,155.87 = 1,238.92/x
  3. Step 3: Cross multiply
    2,286.86x = 3,155.87 × 1,238.92
  4. Step 4: Simplify right side
    2,286.86x = 3,909,866.20
  5. Step 5: Solve for x
    x = 3,909,866.20/2,286.86
  6. Step 6: Final answer
    x = 1,709.71

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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.