Home / 3,891.60-5,823.72-2,431.44

Finding the Fourth Proportional to 3,891.60, 5,823.72 and 2,431.44

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Solution

The fourth proportional to 3,891.60, 5,823.72 and 2,431.44 is: 3,638.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.60 : 5,823.72 = 2,431.44 : x
  2. Step 2: Convert to fraction form
    3,891.60/5,823.72 = 2,431.44/x
  3. Step 3: Cross multiply
    3,891.60x = 5,823.72 × 2,431.44
  4. Step 4: Simplify right side
    3,891.60x = 14,160,025.76
  5. Step 5: Solve for x
    x = 14,160,025.76/3,891.60
  6. Step 6: Final answer
    x = 3,638.61

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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.