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Finding the Fourth Proportional to 7,668.76, 11,519.52 and 5,491.48

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Solution

The fourth proportional to 7,668.76, 11,519.52 and 5,491.48 is: 8,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,668.76 : 11,519.52 = 5,491.48 : x
  2. Step 2: Convert to fraction form
    7,668.76/11,519.52 = 5,491.48/x
  3. Step 3: Cross multiply
    7,668.76x = 11,519.52 × 5,491.48
  4. Step 4: Simplify right side
    7,668.76x = 63,259,213.69
  5. Step 5: Solve for x
    x = 63,259,213.69/7,668.76
  6. Step 6: Final answer
    x = 8,248.95

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1.5x scale

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.