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Finding the Fourth Proportional to 3,859.08, 5,787.25 and 1,393.25

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Solution

The fourth proportional to 3,859.08, 5,787.25 and 1,393.25 is: 2,089.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.08 : 5,787.25 = 1,393.25 : x
  2. Step 2: Convert to fraction form
    3,859.08/5,787.25 = 1,393.25/x
  3. Step 3: Cross multiply
    3,859.08x = 5,787.25 × 1,393.25
  4. Step 4: Simplify right side
    3,859.08x = 8,063,086.06
  5. Step 5: Solve for x
    x = 8,063,086.06/3,859.08
  6. Step 6: Final answer
    x = 2,089.38

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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.