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Finding the Fourth Proportional to 3,838.94, 5,758.16 and 1,339.95

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Solution

The fourth proportional to 3,838.94, 5,758.16 and 1,339.95 is: 2,009.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.94 : 5,758.16 = 1,339.95 : x
  2. Step 2: Convert to fraction form
    3,838.94/5,758.16 = 1,339.95/x
  3. Step 3: Cross multiply
    3,838.94x = 5,758.16 × 1,339.95
  4. Step 4: Simplify right side
    3,838.94x = 7,715,623.22
  5. Step 5: Solve for x
    x = 7,715,623.22/3,838.94
  6. Step 6: Final answer
    x = 2,009.83

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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.