Home / 3,687.08-5,530.62-1,378.60

Finding the Fourth Proportional to 3,687.08, 5,530.62 and 1,378.60

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Solution

The fourth proportional to 3,687.08, 5,530.62 and 1,378.60 is: 2,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.08 : 5,530.62 = 1,378.60 : x
  2. Step 2: Convert to fraction form
    3,687.08/5,530.62 = 1,378.60/x
  3. Step 3: Cross multiply
    3,687.08x = 5,530.62 × 1,378.60
  4. Step 4: Simplify right side
    3,687.08x = 7,624,512.73
  5. Step 5: Solve for x
    x = 7,624,512.73/3,687.08
  6. Step 6: Final answer
    x = 2,067.90

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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.