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Finding the Fourth Proportional to 8,809.52, 13,214.28 and 3,609.68

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Solution

The fourth proportional to 8,809.52, 13,214.28 and 3,609.68 is: 5,414.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.52 : 13,214.28 = 3,609.68 : x
  2. Step 2: Convert to fraction form
    8,809.52/13,214.28 = 3,609.68/x
  3. Step 3: Cross multiply
    8,809.52x = 13,214.28 × 3,609.68
  4. Step 4: Simplify right side
    8,809.52x = 47,699,322.23
  5. Step 5: Solve for x
    x = 47,699,322.23/8,809.52
  6. Step 6: Final answer
    x = 5,414.52

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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.