Home / 8,640.27-11,912.68-5,651.37

Finding the Fourth Proportional to 8,640.27, 11,912.68 and 5,651.37

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Solution

The fourth proportional to 8,640.27, 11,912.68 and 5,651.37 is: 7,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.27 : 11,912.68 = 5,651.37 : x
  2. Step 2: Convert to fraction form
    8,640.27/11,912.68 = 5,651.37/x
  3. Step 3: Cross multiply
    8,640.27x = 11,912.68 × 5,651.37
  4. Step 4: Simplify right side
    8,640.27x = 67,322,962.37
  5. Step 5: Solve for x
    x = 67,322,962.37/8,640.27
  6. Step 6: Final answer
    x = 7,791.77

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1.5x scale

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.