Home / 8,115.24-11,179.62-7,719.96

Finding the Fourth Proportional to 8,115.24, 11,179.62 and 7,719.96

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Solution

The fourth proportional to 8,115.24, 11,179.62 and 7,719.96 is: 10,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.24 : 11,179.62 = 7,719.96 : x
  2. Step 2: Convert to fraction form
    8,115.24/11,179.62 = 7,719.96/x
  3. Step 3: Cross multiply
    8,115.24x = 11,179.62 × 7,719.96
  4. Step 4: Simplify right side
    8,115.24x = 86,306,219.22
  5. Step 5: Solve for x
    x = 86,306,219.22/8,115.24
  6. Step 6: Final answer
    x = 10,635.08

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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.