Home / 7,964.76-11,922.48-6,783.78

Finding the Fourth Proportional to 7,964.76, 11,922.48 and 6,783.78

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Solution

The fourth proportional to 7,964.76, 11,922.48 and 6,783.78 is: 10,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.76 : 11,922.48 = 6,783.78 : x
  2. Step 2: Convert to fraction form
    7,964.76/11,922.48 = 6,783.78/x
  3. Step 3: Cross multiply
    7,964.76x = 11,922.48 × 6,783.78
  4. Step 4: Simplify right side
    7,964.76x = 80,879,481.37
  5. Step 5: Solve for x
    x = 80,879,481.37/7,964.76
  6. Step 6: Final answer
    x = 10,154.67

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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.