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Finding the Fourth Proportional to 2,778.92, 3,834.91 and 1,536.92

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Solution

The fourth proportional to 2,778.92, 3,834.91 and 1,536.92 is: 2,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.92 : 3,834.91 = 1,536.92 : x
  2. Step 2: Convert to fraction form
    2,778.92/3,834.91 = 1,536.92/x
  3. Step 3: Cross multiply
    2,778.92x = 3,834.91 × 1,536.92
  4. Step 4: Simplify right side
    2,778.92x = 5,893,949.88
  5. Step 5: Solve for x
    x = 5,893,949.88/2,778.92
  6. Step 6: Final answer
    x = 2,120.95

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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.