Home / 3,813.11-5,721.50-2,081.69

Finding the Fourth Proportional to 3,813.11, 5,721.50 and 2,081.69

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Solution

The fourth proportional to 3,813.11, 5,721.50 and 2,081.69 is: 3,123.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.11 : 5,721.50 = 2,081.69 : x
  2. Step 2: Convert to fraction form
    3,813.11/5,721.50 = 2,081.69/x
  3. Step 3: Cross multiply
    3,813.11x = 5,721.50 × 2,081.69
  4. Step 4: Simplify right side
    3,813.11x = 11,910,365.93
  5. Step 5: Solve for x
    x = 11,910,365.93/3,813.11
  6. Step 6: Final answer
    x = 3,123.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.