Home / 8,155.37-11,249.31-6,789.15

Finding the Fourth Proportional to 8,155.37, 11,249.31 and 6,789.15

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Solution

The fourth proportional to 8,155.37, 11,249.31 and 6,789.15 is: 9,364.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.37 : 11,249.31 = 6,789.15 : x
  2. Step 2: Convert to fraction form
    8,155.37/11,249.31 = 6,789.15/x
  3. Step 3: Cross multiply
    8,155.37x = 11,249.31 × 6,789.15
  4. Step 4: Simplify right side
    8,155.37x = 76,373,252.99
  5. Step 5: Solve for x
    x = 76,373,252.99/8,155.37
  6. Step 6: Final answer
    x = 9,364.79

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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.