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Finding the Fourth Proportional to 3,611.77, 5,418.86 and 1,662.50

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Solution

The fourth proportional to 3,611.77, 5,418.86 and 1,662.50 is: 2,494.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.77 : 5,418.86 = 1,662.50 : x
  2. Step 2: Convert to fraction form
    3,611.77/5,418.86 = 1,662.50/x
  3. Step 3: Cross multiply
    3,611.77x = 5,418.86 × 1,662.50
  4. Step 4: Simplify right side
    3,611.77x = 9,008,854.75
  5. Step 5: Solve for x
    x = 9,008,854.75/3,611.77
  6. Step 6: Final answer
    x = 2,494.30

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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.