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Finding the Fourth Proportional to 8,347.39, 12,519.12 and 3,908.12

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Solution

The fourth proportional to 8,347.39, 12,519.12 and 3,908.12 is: 5,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.39 : 12,519.12 = 3,908.12 : x
  2. Step 2: Convert to fraction form
    8,347.39/12,519.12 = 3,908.12/x
  3. Step 3: Cross multiply
    8,347.39x = 12,519.12 × 3,908.12
  4. Step 4: Simplify right side
    8,347.39x = 48,926,175.31
  5. Step 5: Solve for x
    x = 48,926,175.31/8,347.39
  6. Step 6: Final answer
    x = 5,861.26

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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.