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Finding the Fourth Proportional to 8,326.36, 12,489.54 and 4,171.47

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Solution

The fourth proportional to 8,326.36, 12,489.54 and 4,171.47 is: 6,257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.36 : 12,489.54 = 4,171.47 : x
  2. Step 2: Convert to fraction form
    8,326.36/12,489.54 = 4,171.47/x
  3. Step 3: Cross multiply
    8,326.36x = 12,489.54 × 4,171.47
  4. Step 4: Simplify right side
    8,326.36x = 52,099,741.42
  5. Step 5: Solve for x
    x = 52,099,741.42/8,326.36
  6. Step 6: Final answer
    x = 6,257.21

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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.