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Finding the Fourth Proportional to 6,479.17, 8,940.90 and 3,825.61

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Solution

The fourth proportional to 6,479.17, 8,940.90 and 3,825.61 is: 5,279.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.17 : 8,940.90 = 3,825.61 : x
  2. Step 2: Convert to fraction form
    6,479.17/8,940.90 = 3,825.61/x
  3. Step 3: Cross multiply
    6,479.17x = 8,940.90 × 3,825.61
  4. Step 4: Simplify right side
    6,479.17x = 34,204,396.45
  5. Step 5: Solve for x
    x = 34,204,396.45/6,479.17
  6. Step 6: Final answer
    x = 5,279.13

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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.