Home / 6,857.20-10,279.40-5,375.60

Finding the Fourth Proportional to 6,857.20, 10,279.40 and 5,375.60

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Solution

The fourth proportional to 6,857.20, 10,279.40 and 5,375.60 is: 8,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,857.20 : 10,279.40 = 5,375.60 : x
  2. Step 2: Convert to fraction form
    6,857.20/10,279.40 = 5,375.60/x
  3. Step 3: Cross multiply
    6,857.20x = 10,279.40 × 5,375.60
  4. Step 4: Simplify right side
    6,857.20x = 55,257,942.64
  5. Step 5: Solve for x
    x = 55,257,942.64/6,857.20
  6. Step 6: Final answer
    x = 8,058.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.