Home / 3,822.39-5,285.25-3,645

Finding the Fourth Proportional to 3,822.39, 5,285.25 and 3,645

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Solution

The fourth proportional to 3,822.39, 5,285.25 and 3,645 is: 5,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,822.39 : 5,285.25 = 3,645 : x
  2. Step 2: Convert to fraction form
    3,822.39/5,285.25 = 3,645/x
  3. Step 3: Cross multiply
    3,822.39x = 5,285.25 × 3,645
  4. Step 4: Simplify right side
    3,822.39x = 19,264,736.25
  5. Step 5: Solve for x
    x = 19,264,736.25/3,822.39
  6. Step 6: Final answer
    x = 5,039.97

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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.