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Finding the Fourth Proportional to 8,809.90, 13,214.78 and 2,235.99

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Solution

The fourth proportional to 8,809.90, 13,214.78 and 2,235.99 is: 3,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.90 : 13,214.78 = 2,235.99 : x
  2. Step 2: Convert to fraction form
    8,809.90/13,214.78 = 2,235.99/x
  3. Step 3: Cross multiply
    8,809.90x = 13,214.78 × 2,235.99
  4. Step 4: Simplify right side
    8,809.90x = 29,548,115.93
  5. Step 5: Solve for x
    x = 29,548,115.93/8,809.90
  6. Step 6: Final answer
    x = 3,353.97

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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.