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Finding the Fourth Proportional to 8,356.39, 11,529.21 and 4,819.12

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Solution

The fourth proportional to 8,356.39, 11,529.21 and 4,819.12 is: 6,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.39 : 11,529.21 = 4,819.12 : x
  2. Step 2: Convert to fraction form
    8,356.39/11,529.21 = 4,819.12/x
  3. Step 3: Cross multiply
    8,356.39x = 11,529.21 × 4,819.12
  4. Step 4: Simplify right side
    8,356.39x = 55,560,646.50
  5. Step 5: Solve for x
    x = 55,560,646.50/8,356.39
  6. Step 6: Final answer
    x = 6,648.88

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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.