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Finding the Fourth Proportional to 3,611.44, 5,415.94 and 1,013.77

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Solution

The fourth proportional to 3,611.44, 5,415.94 and 1,013.77 is: 1,520.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.44 : 5,415.94 = 1,013.77 : x
  2. Step 2: Convert to fraction form
    3,611.44/5,415.94 = 1,013.77/x
  3. Step 3: Cross multiply
    3,611.44x = 5,415.94 × 1,013.77
  4. Step 4: Simplify right side
    3,611.44x = 5,490,517.49
  5. Step 5: Solve for x
    x = 5,490,517.49/3,611.44
  6. Step 6: Final answer
    x = 1,520.31

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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.