Home / 3,947.74-5,446.80-2,686.54

Finding the Fourth Proportional to 3,947.74, 5,446.80 and 2,686.54

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Solution

The fourth proportional to 3,947.74, 5,446.80 and 2,686.54 is: 3,706.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.74 : 5,446.80 = 2,686.54 : x
  2. Step 2: Convert to fraction form
    3,947.74/5,446.80 = 2,686.54/x
  3. Step 3: Cross multiply
    3,947.74x = 5,446.80 × 2,686.54
  4. Step 4: Simplify right side
    3,947.74x = 14,633,046.07
  5. Step 5: Solve for x
    x = 14,633,046.07/3,947.74
  6. Step 6: Final answer
    x = 3,706.69

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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.