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Finding the Fourth Proportional to 3,651.58, 5,468.70 and 1,891.90

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Solution

The fourth proportional to 3,651.58, 5,468.70 and 1,891.90 is: 2,833.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.58 : 5,468.70 = 1,891.90 : x
  2. Step 2: Convert to fraction form
    3,651.58/5,468.70 = 1,891.90/x
  3. Step 3: Cross multiply
    3,651.58x = 5,468.70 × 1,891.90
  4. Step 4: Simplify right side
    3,651.58x = 10,346,233.53
  5. Step 5: Solve for x
    x = 10,346,233.53/3,651.58
  6. Step 6: Final answer
    x = 2,833.36

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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.