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Finding the Fourth Proportional to 3,611.98, 4,985.46 and 2,286.42

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Solution

The fourth proportional to 3,611.98, 4,985.46 and 2,286.42 is: 3,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.98 : 4,985.46 = 2,286.42 : x
  2. Step 2: Convert to fraction form
    3,611.98/4,985.46 = 2,286.42/x
  3. Step 3: Cross multiply
    3,611.98x = 4,985.46 × 2,286.42
  4. Step 4: Simplify right side
    3,611.98x = 11,398,855.45
  5. Step 5: Solve for x
    x = 11,398,855.45/3,611.98
  6. Step 6: Final answer
    x = 3,155.85

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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.