Home / 3,912.63-5,861.88-2,155.74

Finding the Fourth Proportional to 3,912.63, 5,861.88 and 2,155.74

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Solution

The fourth proportional to 3,912.63, 5,861.88 and 2,155.74 is: 3,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.63 : 5,861.88 = 2,155.74 : x
  2. Step 2: Convert to fraction form
    3,912.63/5,861.88 = 2,155.74/x
  3. Step 3: Cross multiply
    3,912.63x = 5,861.88 × 2,155.74
  4. Step 4: Simplify right side
    3,912.63x = 12,636,689.19
  5. Step 5: Solve for x
    x = 12,636,689.19/3,912.63
  6. Step 6: Final answer
    x = 3,229.72

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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.