Home / 3,947.70-5,913.44-2,212.68

Finding the Fourth Proportional to 3,947.70, 5,913.44 and 2,212.68

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Solution

The fourth proportional to 3,947.70, 5,913.44 and 2,212.68 is: 3,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.70 : 5,913.44 = 2,212.68 : x
  2. Step 2: Convert to fraction form
    3,947.70/5,913.44 = 2,212.68/x
  3. Step 3: Cross multiply
    3,947.70x = 5,913.44 × 2,212.68
  4. Step 4: Simplify right side
    3,947.70x = 13,084,550.42
  5. Step 5: Solve for x
    x = 13,084,550.42/3,947.70
  6. Step 6: Final answer
    x = 3,314.47

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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.