Home / 3,639.12-5,456.52-1,327.92

Finding the Fourth Proportional to 3,639.12, 5,456.52 and 1,327.92

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Solution

The fourth proportional to 3,639.12, 5,456.52 and 1,327.92 is: 1,991.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.12 : 5,456.52 = 1,327.92 : x
  2. Step 2: Convert to fraction form
    3,639.12/5,456.52 = 1,327.92/x
  3. Step 3: Cross multiply
    3,639.12x = 5,456.52 × 1,327.92
  4. Step 4: Simplify right side
    3,639.12x = 7,245,822.04
  5. Step 5: Solve for x
    x = 7,245,822.04/3,639.12
  6. Step 6: Final answer
    x = 1,991.09

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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.