Home / 3,680.22-5,078.29-2,108.62

Finding the Fourth Proportional to 3,680.22, 5,078.29 and 2,108.62

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Solution

The fourth proportional to 3,680.22, 5,078.29 and 2,108.62 is: 2,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.22 : 5,078.29 = 2,108.62 : x
  2. Step 2: Convert to fraction form
    3,680.22/5,078.29 = 2,108.62/x
  3. Step 3: Cross multiply
    3,680.22x = 5,078.29 × 2,108.62
  4. Step 4: Simplify right side
    3,680.22x = 10,708,183.86
  5. Step 5: Solve for x
    x = 10,708,183.86/3,680.22
  6. Step 6: Final answer
    x = 2,909.66

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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.