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Finding the Fourth Proportional to 1,858.98, 2,791.84 and 1,815.24

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Solution

The fourth proportional to 1,858.98, 2,791.84 and 1,815.24 is: 2,726.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.98 : 2,791.84 = 1,815.24 : x
  2. Step 2: Convert to fraction form
    1,858.98/2,791.84 = 1,815.24/x
  3. Step 3: Cross multiply
    1,858.98x = 2,791.84 × 1,815.24
  4. Step 4: Simplify right side
    1,858.98x = 5,067,859.64
  5. Step 5: Solve for x
    x = 5,067,859.64/1,858.98
  6. Step 6: Final answer
    x = 2,726.15

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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.