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Finding the Fourth Proportional to 4,454.62, 6,687.39 and 4,278.44

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Solution

The fourth proportional to 4,454.62, 6,687.39 and 4,278.44 is: 6,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,454.62 : 6,687.39 = 4,278.44 : x
  2. Step 2: Convert to fraction form
    4,454.62/6,687.39 = 4,278.44/x
  3. Step 3: Cross multiply
    4,454.62x = 6,687.39 × 4,278.44
  4. Step 4: Simplify right side
    4,454.62x = 28,611,596.87
  5. Step 5: Solve for x
    x = 28,611,596.87/4,454.62
  6. Step 6: Final answer
    x = 6,422.90

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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.