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Finding the Fourth Proportional to 8,921.94, 13,383.13 and 2,998.91

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Solution

The fourth proportional to 8,921.94, 13,383.13 and 2,998.91 is: 4,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.94 : 13,383.13 = 2,998.91 : x
  2. Step 2: Convert to fraction form
    8,921.94/13,383.13 = 2,998.91/x
  3. Step 3: Cross multiply
    8,921.94x = 13,383.13 × 2,998.91
  4. Step 4: Simplify right side
    8,921.94x = 40,134,828.35
  5. Step 5: Solve for x
    x = 40,134,828.35/8,921.94
  6. Step 6: Final answer
    x = 4,498.44

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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.