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Finding the Fourth Proportional to 3,858, 5,324.04 and 2,089.61

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Solution

The fourth proportional to 3,858, 5,324.04 and 2,089.61 is: 2,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858 : 5,324.04 = 2,089.61 : x
  2. Step 2: Convert to fraction form
    3,858/5,324.04 = 2,089.61/x
  3. Step 3: Cross multiply
    3,858x = 5,324.04 × 2,089.61
  4. Step 4: Simplify right side
    3,858x = 11,125,140.60
  5. Step 5: Solve for x
    x = 11,125,140.60/3,858
  6. Step 6: Final answer
    x = 2,883.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.