Home / 3,112.82-4,295.78-1,786.76

Finding the Fourth Proportional to 3,112.82, 4,295.78 and 1,786.76

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Solution

The fourth proportional to 3,112.82, 4,295.78 and 1,786.76 is: 2,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.82 : 4,295.78 = 1,786.76 : x
  2. Step 2: Convert to fraction form
    3,112.82/4,295.78 = 1,786.76/x
  3. Step 3: Cross multiply
    3,112.82x = 4,295.78 × 1,786.76
  4. Step 4: Simplify right side
    3,112.82x = 7,675,527.87
  5. Step 5: Solve for x
    x = 7,675,527.87/3,112.82
  6. Step 6: Final answer
    x = 2,465.78

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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.