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Finding the Fourth Proportional to 6,613.45, 9,920.21 and 2,230.94

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Solution

The fourth proportional to 6,613.45, 9,920.21 and 2,230.94 is: 3,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.45 : 9,920.21 = 2,230.94 : x
  2. Step 2: Convert to fraction form
    6,613.45/9,920.21 = 2,230.94/x
  3. Step 3: Cross multiply
    6,613.45x = 9,920.21 × 2,230.94
  4. Step 4: Simplify right side
    6,613.45x = 22,131,406.94
  5. Step 5: Solve for x
    x = 22,131,406.94/6,613.45
  6. Step 6: Final answer
    x = 3,346.43

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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.