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Finding the Fourth Proportional to 5,765.76, 8,640.52 and 3,296.88

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Solution

The fourth proportional to 5,765.76, 8,640.52 and 3,296.88 is: 4,940.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,765.76 : 8,640.52 = 3,296.88 : x
  2. Step 2: Convert to fraction form
    5,765.76/8,640.52 = 3,296.88/x
  3. Step 3: Cross multiply
    5,765.76x = 8,640.52 × 3,296.88
  4. Step 4: Simplify right side
    5,765.76x = 28,486,757.58
  5. Step 5: Solve for x
    x = 28,486,757.58/5,765.76
  6. Step 6: Final answer
    x = 4,940.68

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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.