Home / 4,186.20-6,279.12-1,108.20

Finding the Fourth Proportional to 4,186.20, 6,279.12 and 1,108.20

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Solution

The fourth proportional to 4,186.20, 6,279.12 and 1,108.20 is: 1,662.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,186.20 : 6,279.12 = 1,108.20 : x
  2. Step 2: Convert to fraction form
    4,186.20/6,279.12 = 1,108.20/x
  3. Step 3: Cross multiply
    4,186.20x = 6,279.12 × 1,108.20
  4. Step 4: Simplify right side
    4,186.20x = 6,958,520.78
  5. Step 5: Solve for x
    x = 6,958,520.78/4,186.20
  6. Step 6: Final answer
    x = 1,662.25

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Double scale
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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.