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Finding the Fourth Proportional to 3,908.85, 5,859.77 and 1,442.00

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Solution

The fourth proportional to 3,908.85, 5,859.77 and 1,442.00 is: 2,161.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.85 : 5,859.77 = 1,442.00 : x
  2. Step 2: Convert to fraction form
    3,908.85/5,859.77 = 1,442.00/x
  3. Step 3: Cross multiply
    3,908.85x = 5,859.77 × 1,442.00
  4. Step 4: Simplify right side
    3,908.85x = 8,449,751.83
  5. Step 5: Solve for x
    x = 8,449,751.83/3,908.85
  6. Step 6: Final answer
    x = 2,161.70

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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.