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Finding the Fourth Proportional to 8,882.15, 13,323.69 and 8,439.21

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Solution

The fourth proportional to 8,882.15, 13,323.69 and 8,439.21 is: 12,659.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,882.15 : 13,323.69 = 8,439.21 : x
  2. Step 2: Convert to fraction form
    8,882.15/13,323.69 = 8,439.21/x
  3. Step 3: Cross multiply
    8,882.15x = 13,323.69 × 8,439.21
  4. Step 4: Simplify right side
    8,882.15x = 112,441,417.88
  5. Step 5: Solve for x
    x = 112,441,417.88/8,882.15
  6. Step 6: Final answer
    x = 12,659.26

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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.