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Finding the Fourth Proportional to 8,245.42, 12,366.75 and 2,979.42

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Solution

The fourth proportional to 8,245.42, 12,366.75 and 2,979.42 is: 4,468.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245.42 : 12,366.75 = 2,979.42 : x
  2. Step 2: Convert to fraction form
    8,245.42/12,366.75 = 2,979.42/x
  3. Step 3: Cross multiply
    8,245.42x = 12,366.75 × 2,979.42
  4. Step 4: Simplify right side
    8,245.42x = 36,845,742.29
  5. Step 5: Solve for x
    x = 36,845,742.29/8,245.42
  6. Step 6: Final answer
    x = 4,468.63

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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.