Home / 7,485.18-11,231.82-3,105.66

Finding the Fourth Proportional to 7,485.18, 11,231.82 and 3,105.66

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Solution

The fourth proportional to 7,485.18, 11,231.82 and 3,105.66 is: 4,660.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.18 : 11,231.82 = 3,105.66 : x
  2. Step 2: Convert to fraction form
    7,485.18/11,231.82 = 3,105.66/x
  3. Step 3: Cross multiply
    7,485.18x = 11,231.82 × 3,105.66
  4. Step 4: Simplify right side
    7,485.18x = 34,882,214.10
  5. Step 5: Solve for x
    x = 34,882,214.10/7,485.18
  6. Step 6: Final answer
    x = 4,660.17

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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.