Home / 7,769.76-11,651.56-3,384.15

Finding the Fourth Proportional to 7,769.76, 11,651.56 and 3,384.15

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Solution

The fourth proportional to 7,769.76, 11,651.56 and 3,384.15 is: 5,074.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.76 : 11,651.56 = 3,384.15 : x
  2. Step 2: Convert to fraction form
    7,769.76/11,651.56 = 3,384.15/x
  3. Step 3: Cross multiply
    7,769.76x = 11,651.56 × 3,384.15
  4. Step 4: Simplify right side
    7,769.76x = 39,430,574.62
  5. Step 5: Solve for x
    x = 39,430,574.62/7,769.76
  6. Step 6: Final answer
    x = 5,074.88

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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.