Home / 3,612.32-5,402.85-2,128.02

Finding the Fourth Proportional to 3,612.32, 5,402.85 and 2,128.02

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Solution

The fourth proportional to 3,612.32, 5,402.85 and 2,128.02 is: 3,182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.32 : 5,402.85 = 2,128.02 : x
  2. Step 2: Convert to fraction form
    3,612.32/5,402.85 = 2,128.02/x
  3. Step 3: Cross multiply
    3,612.32x = 5,402.85 × 2,128.02
  4. Step 4: Simplify right side
    3,612.32x = 11,497,372.86
  5. Step 5: Solve for x
    x = 11,497,372.86/3,612.32
  6. Step 6: Final answer
    x = 3,182.83

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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.