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Finding the Fourth Proportional to 1,794.47, 2,691.17 and 1,405.22

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Solution

The fourth proportional to 1,794.47, 2,691.17 and 1,405.22 is: 2,107.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.47 : 2,691.17 = 1,405.22 : x
  2. Step 2: Convert to fraction form
    1,794.47/2,691.17 = 1,405.22/x
  3. Step 3: Cross multiply
    1,794.47x = 2,691.17 × 1,405.22
  4. Step 4: Simplify right side
    1,794.47x = 3,781,665.43
  5. Step 5: Solve for x
    x = 3,781,665.43/1,794.47
  6. Step 6: Final answer
    x = 2,107.41

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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.