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Finding the Fourth Proportional to 1,791.47, 2,686.62 and 1,674.86

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Solution

The fourth proportional to 1,791.47, 2,686.62 and 1,674.86 is: 2,511.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.47 : 2,686.62 = 1,674.86 : x
  2. Step 2: Convert to fraction form
    1,791.47/2,686.62 = 1,674.86/x
  3. Step 3: Cross multiply
    1,791.47x = 2,686.62 × 1,674.86
  4. Step 4: Simplify right side
    1,791.47x = 4,499,698.94
  5. Step 5: Solve for x
    x = 4,499,698.94/1,791.47
  6. Step 6: Final answer
    x = 2,511.74

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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.