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Finding the Fourth Proportional to 4,611.21, 6,918.03 and 2,419.35

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Solution

The fourth proportional to 4,611.21, 6,918.03 and 2,419.35 is: 3,629.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,611.21 : 6,918.03 = 2,419.35 : x
  2. Step 2: Convert to fraction form
    4,611.21/6,918.03 = 2,419.35/x
  3. Step 3: Cross multiply
    4,611.21x = 6,918.03 × 2,419.35
  4. Step 4: Simplify right side
    4,611.21x = 16,737,135.88
  5. Step 5: Solve for x
    x = 16,737,135.88/4,611.21
  6. Step 6: Final answer
    x = 3,629.66

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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.