Home / 3,834.75-5,292.20-2,178.75

Finding the Fourth Proportional to 3,834.75, 5,292.20 and 2,178.75

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Solution

The fourth proportional to 3,834.75, 5,292.20 and 2,178.75 is: 3,006.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,834.75 : 5,292.20 = 2,178.75 : x
  2. Step 2: Convert to fraction form
    3,834.75/5,292.20 = 2,178.75/x
  3. Step 3: Cross multiply
    3,834.75x = 5,292.20 × 2,178.75
  4. Step 4: Simplify right side
    3,834.75x = 11,530,369.86
  5. Step 5: Solve for x
    x = 11,530,369.86/3,834.75
  6. Step 6: Final answer
    x = 3,006.81

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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.