Home / 3,517.89-5,278.75-1,178.61

Finding the Fourth Proportional to 3,517.89, 5,278.75 and 1,178.61

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Solution

The fourth proportional to 3,517.89, 5,278.75 and 1,178.61 is: 1,768.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.89 : 5,278.75 = 1,178.61 : x
  2. Step 2: Convert to fraction form
    3,517.89/5,278.75 = 1,178.61/x
  3. Step 3: Cross multiply
    3,517.89x = 5,278.75 × 1,178.61
  4. Step 4: Simplify right side
    3,517.89x = 6,221,587.54
  5. Step 5: Solve for x
    x = 6,221,587.54/3,517.89
  6. Step 6: Final answer
    x = 1,768.56

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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.