Home / 3,687.12-5,528.52-1,378.80

Finding the Fourth Proportional to 3,687.12, 5,528.52 and 1,378.80

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Solution

The fourth proportional to 3,687.12, 5,528.52 and 1,378.80 is: 2,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,687.12 : 5,528.52 = 1,378.80 : x
  2. Step 2: Convert to fraction form
    3,687.12/5,528.52 = 1,378.80/x
  3. Step 3: Cross multiply
    3,687.12x = 5,528.52 × 1,378.80
  4. Step 4: Simplify right side
    3,687.12x = 7,622,723.38
  5. Step 5: Solve for x
    x = 7,622,723.38/3,687.12
  6. Step 6: Final answer
    x = 2,067.39

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1.5x scale

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.