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Finding the Fourth Proportional to 3,885.22, 5,827.85 and 1,419.02

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Solution

The fourth proportional to 3,885.22, 5,827.85 and 1,419.02 is: 2,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.22 : 5,827.85 = 1,419.02 : x
  2. Step 2: Convert to fraction form
    3,885.22/5,827.85 = 1,419.02/x
  3. Step 3: Cross multiply
    3,885.22x = 5,827.85 × 1,419.02
  4. Step 4: Simplify right side
    3,885.22x = 8,269,826.65
  5. Step 5: Solve for x
    x = 8,269,826.65/3,885.22
  6. Step 6: Final answer
    x = 2,128.54

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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.