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Finding the Fourth Proportional to 3,873.79, 5,803.86 and 3,179.43

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Solution

The fourth proportional to 3,873.79, 5,803.86 and 3,179.43 is: 4,763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.79 : 5,803.86 = 3,179.43 : x
  2. Step 2: Convert to fraction form
    3,873.79/5,803.86 = 3,179.43/x
  3. Step 3: Cross multiply
    3,873.79x = 5,803.86 × 3,179.43
  4. Step 4: Simplify right side
    3,873.79x = 18,452,966.60
  5. Step 5: Solve for x
    x = 18,452,966.60/3,873.79
  6. Step 6: Final answer
    x = 4,763.54

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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.