Home / 3,112.92-4,296.78-1,935.72

Finding the Fourth Proportional to 3,112.92, 4,296.78 and 1,935.72

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Solution

The fourth proportional to 3,112.92, 4,296.78 and 1,935.72 is: 2,671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.92 : 4,296.78 = 1,935.72 : x
  2. Step 2: Convert to fraction form
    3,112.92/4,296.78 = 1,935.72/x
  3. Step 3: Cross multiply
    3,112.92x = 4,296.78 × 1,935.72
  4. Step 4: Simplify right side
    3,112.92x = 8,317,362.98
  5. Step 5: Solve for x
    x = 8,317,362.98/3,112.92
  6. Step 6: Final answer
    x = 2,671.88

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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.