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Finding the Fourth Proportional to 3,858.86, 5,788.55 and 1,910.54

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Solution

The fourth proportional to 3,858.86, 5,788.55 and 1,910.54 is: 2,865.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.86 : 5,788.55 = 1,910.54 : x
  2. Step 2: Convert to fraction form
    3,858.86/5,788.55 = 1,910.54/x
  3. Step 3: Cross multiply
    3,858.86x = 5,788.55 × 1,910.54
  4. Step 4: Simplify right side
    3,858.86x = 11,059,217.82
  5. Step 5: Solve for x
    x = 11,059,217.82/3,858.86
  6. Step 6: Final answer
    x = 2,865.93

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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.