Home / 3,947.20-5,920.64-1,755.36

Finding the Fourth Proportional to 3,947.20, 5,920.64 and 1,755.36

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Solution

The fourth proportional to 3,947.20, 5,920.64 and 1,755.36 is: 2,632.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.20 : 5,920.64 = 1,755.36 : x
  2. Step 2: Convert to fraction form
    3,947.20/5,920.64 = 1,755.36/x
  3. Step 3: Cross multiply
    3,947.20x = 5,920.64 × 1,755.36
  4. Step 4: Simplify right side
    3,947.20x = 10,392,854.63
  5. Step 5: Solve for x
    x = 10,392,854.63/3,947.20
  6. Step 6: Final answer
    x = 2,632.97

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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.