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Finding the Fourth Proportional to 6,136.85, 8,469.20 and 3,620.43

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Solution

The fourth proportional to 6,136.85, 8,469.20 and 3,620.43 is: 4,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,136.85 : 8,469.20 = 3,620.43 : x
  2. Step 2: Convert to fraction form
    6,136.85/8,469.20 = 3,620.43/x
  3. Step 3: Cross multiply
    6,136.85x = 8,469.20 × 3,620.43
  4. Step 4: Simplify right side
    6,136.85x = 30,662,145.76
  5. Step 5: Solve for x
    x = 30,662,145.76/6,136.85
  6. Step 6: Final answer
    x = 4,996.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.