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Finding the Fourth Proportional to 3,984.52, 5,976.79 and 1,898.20

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Solution

The fourth proportional to 3,984.52, 5,976.79 and 1,898.20 is: 2,847.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.52 : 5,976.79 = 1,898.20 : x
  2. Step 2: Convert to fraction form
    3,984.52/5,976.79 = 1,898.20/x
  3. Step 3: Cross multiply
    3,984.52x = 5,976.79 × 1,898.20
  4. Step 4: Simplify right side
    3,984.52x = 11,345,142.78
  5. Step 5: Solve for x
    x = 11,345,142.78/3,984.52
  6. Step 6: Final answer
    x = 2,847.30

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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.