Home / 7,778.28-11,668.97-2,231.67

Finding the Fourth Proportional to 7,778.28, 11,668.97 and 2,231.67

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Solution

The fourth proportional to 7,778.28, 11,668.97 and 2,231.67 is: 3,347.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.28 : 11,668.97 = 2,231.67 : x
  2. Step 2: Convert to fraction form
    7,778.28/11,668.97 = 2,231.67/x
  3. Step 3: Cross multiply
    7,778.28x = 11,668.97 × 2,231.67
  4. Step 4: Simplify right side
    7,778.28x = 26,041,290.28
  5. Step 5: Solve for x
    x = 26,041,290.28/7,778.28
  6. Step 6: Final answer
    x = 3,347.95

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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.