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Finding the Fourth Proportional to 2,611.17, 3,608.18 and 1,901.78

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Solution

The fourth proportional to 2,611.17, 3,608.18 and 1,901.78 is: 2,627.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.17 : 3,608.18 = 1,901.78 : x
  2. Step 2: Convert to fraction form
    2,611.17/3,608.18 = 1,901.78/x
  3. Step 3: Cross multiply
    2,611.17x = 3,608.18 × 1,901.78
  4. Step 4: Simplify right side
    2,611.17x = 6,861,944.14
  5. Step 5: Solve for x
    x = 6,861,944.14/2,611.17
  6. Step 6: Final answer
    x = 2,627.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.