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Finding the Fourth Proportional to 3,859.03, 5,789.15 and 1,393.59

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Solution

The fourth proportional to 3,859.03, 5,789.15 and 1,393.59 is: 2,090.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.03 : 5,789.15 = 1,393.59 : x
  2. Step 2: Convert to fraction form
    3,859.03/5,789.15 = 1,393.59/x
  3. Step 3: Cross multiply
    3,859.03x = 5,789.15 × 1,393.59
  4. Step 4: Simplify right side
    3,859.03x = 8,067,701.55
  5. Step 5: Solve for x
    x = 8,067,701.55/3,859.03
  6. Step 6: Final answer
    x = 2,090.60

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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.