Home / 9,120.09-13,662.44-5,990.60

Finding the Fourth Proportional to 9,120.09, 13,662.44 and 5,990.60

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Solution

The fourth proportional to 9,120.09, 13,662.44 and 5,990.60 is: 8,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.09 : 13,662.44 = 5,990.60 : x
  2. Step 2: Convert to fraction form
    9,120.09/13,662.44 = 5,990.60/x
  3. Step 3: Cross multiply
    9,120.09x = 13,662.44 × 5,990.60
  4. Step 4: Simplify right side
    9,120.09x = 81,846,258.94
  5. Step 5: Solve for x
    x = 81,846,258.94/9,120.09
  6. Step 6: Final answer
    x = 8,974.28

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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.