Home / 8,326.28-12,489.42-2,170.28

Finding the Fourth Proportional to 8,326.28, 12,489.42 and 2,170.28

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Solution

The fourth proportional to 8,326.28, 12,489.42 and 2,170.28 is: 3,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.28 : 12,489.42 = 2,170.28 : x
  2. Step 2: Convert to fraction form
    8,326.28/12,489.42 = 2,170.28/x
  3. Step 3: Cross multiply
    8,326.28x = 12,489.42 × 2,170.28
  4. Step 4: Simplify right side
    8,326.28x = 27,105,538.44
  5. Step 5: Solve for x
    x = 27,105,538.44/8,326.28
  6. Step 6: Final answer
    x = 3,255.42

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Half scale
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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.