Home / 1,791.45-2,471.85-1,005.39

Finding the Fourth Proportional to 1,791.45, 2,471.85 and 1,005.39

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Solution

The fourth proportional to 1,791.45, 2,471.85 and 1,005.39 is: 1,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.45 : 2,471.85 = 1,005.39 : x
  2. Step 2: Convert to fraction form
    1,791.45/2,471.85 = 1,005.39/x
  3. Step 3: Cross multiply
    1,791.45x = 2,471.85 × 1,005.39
  4. Step 4: Simplify right side
    1,791.45x = 2,485,173.27
  5. Step 5: Solve for x
    x = 2,485,173.27/1,791.45
  6. Step 6: Final answer
    x = 1,387.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.