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Finding the Fourth Proportional to 6,808.20, 10,209.90 and 2,425.80

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Solution

The fourth proportional to 6,808.20, 10,209.90 and 2,425.80 is: 3,637.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,808.20 : 10,209.90 = 2,425.80 : x
  2. Step 2: Convert to fraction form
    6,808.20/10,209.90 = 2,425.80/x
  3. Step 3: Cross multiply
    6,808.20x = 10,209.90 × 2,425.80
  4. Step 4: Simplify right side
    6,808.20x = 24,767,175.42
  5. Step 5: Solve for x
    x = 24,767,175.42/6,808.20
  6. Step 6: Final answer
    x = 3,637.84

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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.