Home / 8,640.11-11,923.38-5,103.56

Finding the Fourth Proportional to 8,640.11, 11,923.38 and 5,103.56

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Solution

The fourth proportional to 8,640.11, 11,923.38 and 5,103.56 is: 7,042.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.11 : 11,923.38 = 5,103.56 : x
  2. Step 2: Convert to fraction form
    8,640.11/11,923.38 = 5,103.56/x
  3. Step 3: Cross multiply
    8,640.11x = 11,923.38 × 5,103.56
  4. Step 4: Simplify right side
    8,640.11x = 60,851,625.62
  5. Step 5: Solve for x
    x = 60,851,625.62/8,640.11
  6. Step 6: Final answer
    x = 7,042.93

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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.