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Finding the Fourth Proportional to 3,611.84, 5,385.60 and 3,604.95

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Solution

The fourth proportional to 3,611.84, 5,385.60 and 3,604.95 is: 5,375.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.84 : 5,385.60 = 3,604.95 : x
  2. Step 2: Convert to fraction form
    3,611.84/5,385.60 = 3,604.95/x
  3. Step 3: Cross multiply
    3,611.84x = 5,385.60 × 3,604.95
  4. Step 4: Simplify right side
    3,611.84x = 19,414,818.72
  5. Step 5: Solve for x
    x = 19,414,818.72/3,611.84
  6. Step 6: Final answer
    x = 5,375.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.