Home / 3,947.72-5,446.84-2,686.56

Finding the Fourth Proportional to 3,947.72, 5,446.84 and 2,686.56

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Solution

The fourth proportional to 3,947.72, 5,446.84 and 2,686.56 is: 3,706.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.72 : 5,446.84 = 2,686.56 : x
  2. Step 2: Convert to fraction form
    3,947.72/5,446.84 = 2,686.56/x
  3. Step 3: Cross multiply
    3,947.72x = 5,446.84 × 2,686.56
  4. Step 4: Simplify right side
    3,947.72x = 14,633,262.47
  5. Step 5: Solve for x
    x = 14,633,262.47/3,947.72
  6. Step 6: Final answer
    x = 3,706.76

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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.