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Finding the Fourth Proportional to 5,479.44, 8,209.44 and 2,884.20

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Solution

The fourth proportional to 5,479.44, 8,209.44 and 2,884.20 is: 4,321.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.44 : 8,209.44 = 2,884.20 : x
  2. Step 2: Convert to fraction form
    5,479.44/8,209.44 = 2,884.20/x
  3. Step 3: Cross multiply
    5,479.44x = 8,209.44 × 2,884.20
  4. Step 4: Simplify right side
    5,479.44x = 23,677,666.85
  5. Step 5: Solve for x
    x = 23,677,666.85/5,479.44
  6. Step 6: Final answer
    x = 4,321.18

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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.