Home / 3,838.61-5,758.56-1,205.61

Finding the Fourth Proportional to 3,838.61, 5,758.56 and 1,205.61

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Solution

The fourth proportional to 3,838.61, 5,758.56 and 1,205.61 is: 1,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.61 : 5,758.56 = 1,205.61 : x
  2. Step 2: Convert to fraction form
    3,838.61/5,758.56 = 1,205.61/x
  3. Step 3: Cross multiply
    3,838.61x = 5,758.56 × 1,205.61
  4. Step 4: Simplify right side
    3,838.61x = 6,942,548.73
  5. Step 5: Solve for x
    x = 6,942,548.73/3,838.61
  6. Step 6: Final answer
    x = 1,808.61

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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.