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Finding the Fourth Proportional to 3,874.58, 5,812.52 and 1,205.54

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Solution

The fourth proportional to 3,874.58, 5,812.52 and 1,205.54 is: 1,808.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.58 : 5,812.52 = 1,205.54 : x
  2. Step 2: Convert to fraction form
    3,874.58/5,812.52 = 1,205.54/x
  3. Step 3: Cross multiply
    3,874.58x = 5,812.52 × 1,205.54
  4. Step 4: Simplify right side
    3,874.58x = 7,007,190.27
  5. Step 5: Solve for x
    x = 7,007,190.27/3,874.58
  6. Step 6: Final answer
    x = 1,808.51

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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.