Home / 3,834.39-5,291.49-2,155.76

Finding the Fourth Proportional to 3,834.39, 5,291.49 and 2,155.76

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Solution

The fourth proportional to 3,834.39, 5,291.49 and 2,155.76 is: 2,974.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.39 : 5,291.49 = 2,155.76 : x
  2. Step 2: Convert to fraction form
    3,834.39/5,291.49 = 2,155.76/x
  3. Step 3: Cross multiply
    3,834.39x = 5,291.49 × 2,155.76
  4. Step 4: Simplify right side
    3,834.39x = 11,407,182.48
  5. Step 5: Solve for x
    x = 11,407,182.48/3,834.39
  6. Step 6: Final answer
    x = 2,974.97

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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.