Home / 3,947.84-5,447.93-2,179.61

Finding the Fourth Proportional to 3,947.84, 5,447.93 and 2,179.61

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Solution

The fourth proportional to 3,947.84, 5,447.93 and 2,179.61 is: 3,007.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.84 : 5,447.93 = 2,179.61 : x
  2. Step 2: Convert to fraction form
    3,947.84/5,447.93 = 2,179.61/x
  3. Step 3: Cross multiply
    3,947.84x = 5,447.93 × 2,179.61
  4. Step 4: Simplify right side
    3,947.84x = 11,874,362.71
  5. Step 5: Solve for x
    x = 11,874,362.71/3,947.84
  6. Step 6: Final answer
    x = 3,007.81

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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.