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Finding the Fourth Proportional to 6,408.91, 9,611.82 and 3,287.29

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Solution

The fourth proportional to 6,408.91, 9,611.82 and 3,287.29 is: 4,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.91 : 9,611.82 = 3,287.29 : x
  2. Step 2: Convert to fraction form
    6,408.91/9,611.82 = 3,287.29/x
  3. Step 3: Cross multiply
    6,408.91x = 9,611.82 × 3,287.29
  4. Step 4: Simplify right side
    6,408.91x = 31,596,839.77
  5. Step 5: Solve for x
    x = 31,596,839.77/6,408.91
  6. Step 6: Final answer
    x = 4,930.14

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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.