Home / 8,128.26-11,216.61-4,543.38

Finding the Fourth Proportional to 8,128.26, 11,216.61 and 4,543.38

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Solution

The fourth proportional to 8,128.26, 11,216.61 and 4,543.38 is: 6,269.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.26 : 11,216.61 = 4,543.38 : x
  2. Step 2: Convert to fraction form
    8,128.26/11,216.61 = 4,543.38/x
  3. Step 3: Cross multiply
    8,128.26x = 11,216.61 × 4,543.38
  4. Step 4: Simplify right side
    8,128.26x = 50,961,321.54
  5. Step 5: Solve for x
    x = 50,961,321.54/8,128.26
  6. Step 6: Final answer
    x = 6,269.65

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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.