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Finding the Fourth Proportional to 2,132.86, 3,199.84 and 833.90

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Solution

The fourth proportional to 2,132.86, 3,199.84 and 833.90 is: 1,251.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.86 : 3,199.84 = 833.90 : x
  2. Step 2: Convert to fraction form
    2,132.86/3,199.84 = 833.90/x
  3. Step 3: Cross multiply
    2,132.86x = 3,199.84 × 833.90
  4. Step 4: Simplify right side
    2,132.86x = 2,668,346.58
  5. Step 5: Solve for x
    x = 2,668,346.58/2,132.86
  6. Step 6: Final answer
    x = 1,251.07

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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.