Home / 7,904.69-11,855.21-3,519.75

Finding the Fourth Proportional to 7,904.69, 11,855.21 and 3,519.75

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Solution

The fourth proportional to 7,904.69, 11,855.21 and 3,519.75 is: 5,278.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,904.69 : 11,855.21 = 3,519.75 : x
  2. Step 2: Convert to fraction form
    7,904.69/11,855.21 = 3,519.75/x
  3. Step 3: Cross multiply
    7,904.69x = 11,855.21 × 3,519.75
  4. Step 4: Simplify right side
    7,904.69x = 41,727,357.80
  5. Step 5: Solve for x
    x = 41,727,357.80/7,904.69
  6. Step 6: Final answer
    x = 5,278.81

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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.