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Finding the Fourth Proportional to 3,852.91, 5,778.15 and 1,906.48

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Solution

The fourth proportional to 3,852.91, 5,778.15 and 1,906.48 is: 2,859.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.91 : 5,778.15 = 1,906.48 : x
  2. Step 2: Convert to fraction form
    3,852.91/5,778.15 = 1,906.48/x
  3. Step 3: Cross multiply
    3,852.91x = 5,778.15 × 1,906.48
  4. Step 4: Simplify right side
    3,852.91x = 11,015,927.41
  5. Step 5: Solve for x
    x = 11,015,927.41/3,852.91
  6. Step 6: Final answer
    x = 2,859.12

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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.