Home / 8,517.66-11,755.38-5,160.39

Finding the Fourth Proportional to 8,517.66, 11,755.38 and 5,160.39

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Solution

The fourth proportional to 8,517.66, 11,755.38 and 5,160.39 is: 7,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.66 : 11,755.38 = 5,160.39 : x
  2. Step 2: Convert to fraction form
    8,517.66/11,755.38 = 5,160.39/x
  3. Step 3: Cross multiply
    8,517.66x = 11,755.38 × 5,160.39
  4. Step 4: Simplify right side
    8,517.66x = 60,662,345.40
  5. Step 5: Solve for x
    x = 60,662,345.40/8,517.66
  6. Step 6: Final answer
    x = 7,121.95

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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.