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Finding the Fourth Proportional to 6,512.78, 8,979.18 and 4,150.82

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Solution

The fourth proportional to 6,512.78, 8,979.18 and 4,150.82 is: 5,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.78 : 8,979.18 = 4,150.82 : x
  2. Step 2: Convert to fraction form
    6,512.78/8,979.18 = 4,150.82/x
  3. Step 3: Cross multiply
    6,512.78x = 8,979.18 × 4,150.82
  4. Step 4: Simplify right side
    6,512.78x = 37,270,959.93
  5. Step 5: Solve for x
    x = 37,270,959.93/6,512.78
  6. Step 6: Final answer
    x = 5,722.74

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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.