Home / 8,111.25-11,183.39-6,768.79

Finding the Fourth Proportional to 8,111.25, 11,183.39 and 6,768.79

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Solution

The fourth proportional to 8,111.25, 11,183.39 and 6,768.79 is: 9,332.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.25 : 11,183.39 = 6,768.79 : x
  2. Step 2: Convert to fraction form
    8,111.25/11,183.39 = 6,768.79/x
  3. Step 3: Cross multiply
    8,111.25x = 11,183.39 × 6,768.79
  4. Step 4: Simplify right side
    8,111.25x = 75,697,956.60
  5. Step 5: Solve for x
    x = 75,697,956.60/8,111.25
  6. Step 6: Final answer
    x = 9,332.46

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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.