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Finding the Fourth Proportional to 3,611.08, 5,418.06 and 1,965.68

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Solution

The fourth proportional to 3,611.08, 5,418.06 and 1,965.68 is: 2,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.08 : 5,418.06 = 1,965.68 : x
  2. Step 2: Convert to fraction form
    3,611.08/5,418.06 = 1,965.68/x
  3. Step 3: Cross multiply
    3,611.08x = 5,418.06 × 1,965.68
  4. Step 4: Simplify right side
    3,611.08x = 10,650,172.18
  5. Step 5: Solve for x
    x = 10,650,172.18/3,611.08
  6. Step 6: Final answer
    x = 2,949.30

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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.