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Finding the Fourth Proportional to 7,983.91, 11,018.14 and 4,447.12

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Solution

The fourth proportional to 7,983.91, 11,018.14 and 4,447.12 is: 6,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.91 : 11,018.14 = 4,447.12 : x
  2. Step 2: Convert to fraction form
    7,983.91/11,018.14 = 4,447.12/x
  3. Step 3: Cross multiply
    7,983.91x = 11,018.14 × 4,447.12
  4. Step 4: Simplify right side
    7,983.91x = 48,998,993.41
  5. Step 5: Solve for x
    x = 48,998,993.41/7,983.91
  6. Step 6: Final answer
    x = 6,137.22

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.