Home / 9,399.44-12,971.75-5,150.39

Finding the Fourth Proportional to 9,399.44, 12,971.75 and 5,150.39

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Solution

The fourth proportional to 9,399.44, 12,971.75 and 5,150.39 is: 7,107.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,399.44 : 12,971.75 = 5,150.39 : x
  2. Step 2: Convert to fraction form
    9,399.44/12,971.75 = 5,150.39/x
  3. Step 3: Cross multiply
    9,399.44x = 12,971.75 × 5,150.39
  4. Step 4: Simplify right side
    9,399.44x = 66,809,480.87
  5. Step 5: Solve for x
    x = 66,809,480.87/9,399.44
  6. Step 6: Final answer
    x = 7,107.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.