Home / 1,862.11-2,791.20-629.09

Finding the Fourth Proportional to 1,862.11, 2,791.20 and 629.09

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Solution

The fourth proportional to 1,862.11, 2,791.20 and 629.09 is: 942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,862.11 : 2,791.20 = 629.09 : x
  2. Step 2: Convert to fraction form
    1,862.11/2,791.20 = 629.09/x
  3. Step 3: Cross multiply
    1,862.11x = 2,791.20 × 629.09
  4. Step 4: Simplify right side
    1,862.11x = 1,755,916.01
  5. Step 5: Solve for x
    x = 1,755,916.01/1,862.11
  6. Step 6: Final answer
    x = 942.97

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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.