Home / 3,813.92-5,263.71-2,135.97

Finding the Fourth Proportional to 3,813.92, 5,263.71 and 2,135.97

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Solution

The fourth proportional to 3,813.92, 5,263.71 and 2,135.97 is: 2,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.92 : 5,263.71 = 2,135.97 : x
  2. Step 2: Convert to fraction form
    3,813.92/5,263.71 = 2,135.97/x
  3. Step 3: Cross multiply
    3,813.92x = 5,263.71 × 2,135.97
  4. Step 4: Simplify right side
    3,813.92x = 11,243,089.65
  5. Step 5: Solve for x
    x = 11,243,089.65/3,813.92
  6. Step 6: Final answer
    x = 2,947.91

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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.