Home / 9,067.20-13,611.60-5,121.60

Finding the Fourth Proportional to 9,067.20, 13,611.60 and 5,121.60

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Solution

The fourth proportional to 9,067.20, 13,611.60 and 5,121.60 is: 7,688.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,067.20 : 13,611.60 = 5,121.60 : x
  2. Step 2: Convert to fraction form
    9,067.20/13,611.60 = 5,121.60/x
  3. Step 3: Cross multiply
    9,067.20x = 13,611.60 × 5,121.60
  4. Step 4: Simplify right side
    9,067.20x = 69,713,170.56
  5. Step 5: Solve for x
    x = 69,713,170.56/9,067.20
  6. Step 6: Final answer
    x = 7,688.50

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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.