Home / 3,829.62-5,284.78-2,128.02

Finding the Fourth Proportional to 3,829.62, 5,284.78 and 2,128.02

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Solution

The fourth proportional to 3,829.62, 5,284.78 and 2,128.02 is: 2,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,829.62 : 5,284.78 = 2,128.02 : x
  2. Step 2: Convert to fraction form
    3,829.62/5,284.78 = 2,128.02/x
  3. Step 3: Cross multiply
    3,829.62x = 5,284.78 × 2,128.02
  4. Step 4: Simplify right side
    3,829.62x = 11,246,117.54
  5. Step 5: Solve for x
    x = 11,246,117.54/3,829.62
  6. Step 6: Final answer
    x = 2,936.61

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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.