Home / 3,984.32-5,976.48-1,211.12

Finding the Fourth Proportional to 3,984.32, 5,976.48 and 1,211.12

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Solution

The fourth proportional to 3,984.32, 5,976.48 and 1,211.12 is: 1,816.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.32 : 5,976.48 = 1,211.12 : x
  2. Step 2: Convert to fraction form
    3,984.32/5,976.48 = 1,211.12/x
  3. Step 3: Cross multiply
    3,984.32x = 5,976.48 × 1,211.12
  4. Step 4: Simplify right side
    3,984.32x = 7,238,234.46
  5. Step 5: Solve for x
    x = 7,238,234.46/3,984.32
  6. Step 6: Final answer
    x = 1,816.68

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Double scale
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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.