Home / 8,102.49-11,180.66-5,979.20

Finding the Fourth Proportional to 8,102.49, 11,180.66 and 5,979.20

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Solution

The fourth proportional to 8,102.49, 11,180.66 and 5,979.20 is: 8,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.49 : 11,180.66 = 5,979.20 : x
  2. Step 2: Convert to fraction form
    8,102.49/11,180.66 = 5,979.20/x
  3. Step 3: Cross multiply
    8,102.49x = 11,180.66 × 5,979.20
  4. Step 4: Simplify right side
    8,102.49x = 66,851,316.47
  5. Step 5: Solve for x
    x = 66,851,316.47/8,102.49
  6. Step 6: Final answer
    x = 8,250.71

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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.