Home / 5,490.45-8,236.47-1,791.77

Finding the Fourth Proportional to 5,490.45, 8,236.47 and 1,791.77

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Solution

The fourth proportional to 5,490.45, 8,236.47 and 1,791.77 is: 2,687.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.45 : 8,236.47 = 1,791.77 : x
  2. Step 2: Convert to fraction form
    5,490.45/8,236.47 = 1,791.77/x
  3. Step 3: Cross multiply
    5,490.45x = 8,236.47 × 1,791.77
  4. Step 4: Simplify right side
    5,490.45x = 14,757,856.28
  5. Step 5: Solve for x
    x = 14,757,856.28/5,490.45
  6. Step 6: Final answer
    x = 2,687.91

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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.