Home / 6,613.20-9,920.81-2,169.39

Finding the Fourth Proportional to 6,613.20, 9,920.81 and 2,169.39

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Solution

The fourth proportional to 6,613.20, 9,920.81 and 2,169.39 is: 3,254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.20 : 9,920.81 = 2,169.39 : x
  2. Step 2: Convert to fraction form
    6,613.20/9,920.81 = 2,169.39/x
  3. Step 3: Cross multiply
    6,613.20x = 9,920.81 × 2,169.39
  4. Step 4: Simplify right side
    6,613.20x = 21,522,095.16
  5. Step 5: Solve for x
    x = 21,522,095.16/6,613.20
  6. Step 6: Final answer
    x = 3,254.41

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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.