Home / 4,120.32-6,179.28-1,198.56

Finding the Fourth Proportional to 4,120.32, 6,179.28 and 1,198.56

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Solution

The fourth proportional to 4,120.32, 6,179.28 and 1,198.56 is: 1,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.32 : 6,179.28 = 1,198.56 : x
  2. Step 2: Convert to fraction form
    4,120.32/6,179.28 = 1,198.56/x
  3. Step 3: Cross multiply
    4,120.32x = 6,179.28 × 1,198.56
  4. Step 4: Simplify right side
    4,120.32x = 7,406,237.84
  5. Step 5: Solve for x
    x = 7,406,237.84/4,120.32
  6. Step 6: Final answer
    x = 1,797.49

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Half scale
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Double scale
Find fourth proportional to 4,121.32, 6,180.78 and 1,199.56
Similar ratio
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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.