Home / 3,478.76-5,211.18-2,091.35

Finding the Fourth Proportional to 3,478.76, 5,211.18 and 2,091.35

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Solution

The fourth proportional to 3,478.76, 5,211.18 and 2,091.35 is: 3,132.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.76 : 5,211.18 = 2,091.35 : x
  2. Step 2: Convert to fraction form
    3,478.76/5,211.18 = 2,091.35/x
  3. Step 3: Cross multiply
    3,478.76x = 5,211.18 × 2,091.35
  4. Step 4: Simplify right side
    3,478.76x = 10,898,375.24
  5. Step 5: Solve for x
    x = 10,898,375.24/3,478.76
  6. Step 6: Final answer
    x = 3,132.83

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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.