Home / 3,678.39-5,517.63-1,081.38

Finding the Fourth Proportional to 3,678.39, 5,517.63 and 1,081.38

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Solution

The fourth proportional to 3,678.39, 5,517.63 and 1,081.38 is: 1,622.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.39 : 5,517.63 = 1,081.38 : x
  2. Step 2: Convert to fraction form
    3,678.39/5,517.63 = 1,081.38/x
  3. Step 3: Cross multiply
    3,678.39x = 5,517.63 × 1,081.38
  4. Step 4: Simplify right side
    3,678.39x = 5,966,654.73
  5. Step 5: Solve for x
    x = 5,966,654.73/3,678.39
  6. Step 6: Final answer
    x = 1,622.08

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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.