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Finding the Fourth Proportional to 6,396.52, 8,819.92 and 5,213.92

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Solution

The fourth proportional to 6,396.52, 8,819.92 and 5,213.92 is: 7,189.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,396.52 : 8,819.92 = 5,213.92 : x
  2. Step 2: Convert to fraction form
    6,396.52/8,819.92 = 5,213.92/x
  3. Step 3: Cross multiply
    6,396.52x = 8,819.92 × 5,213.92
  4. Step 4: Simplify right side
    6,396.52x = 45,986,357.29
  5. Step 5: Solve for x
    x = 45,986,357.29/6,396.52
  6. Step 6: Final answer
    x = 7,189.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.