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Finding the Fourth Proportional to 5,479.92, 8,212.96 and 3,504.80

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Solution

The fourth proportional to 5,479.92, 8,212.96 and 3,504.80 is: 5,252.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.92 : 8,212.96 = 3,504.80 : x
  2. Step 2: Convert to fraction form
    5,479.92/8,212.96 = 3,504.80/x
  3. Step 3: Cross multiply
    5,479.92x = 8,212.96 × 3,504.80
  4. Step 4: Simplify right side
    5,479.92x = 28,784,782.21
  5. Step 5: Solve for x
    x = 28,784,782.21/5,479.92
  6. Step 6: Final answer
    x = 5,252.77

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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.