Home / 8,211.36-12,319.20-3,826.56

Finding the Fourth Proportional to 8,211.36, 12,319.20 and 3,826.56

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Solution

The fourth proportional to 8,211.36, 12,319.20 and 3,826.56 is: 5,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.36 : 12,319.20 = 3,826.56 : x
  2. Step 2: Convert to fraction form
    8,211.36/12,319.20 = 3,826.56/x
  3. Step 3: Cross multiply
    8,211.36x = 12,319.20 × 3,826.56
  4. Step 4: Simplify right side
    8,211.36x = 47,140,157.95
  5. Step 5: Solve for x
    x = 47,140,157.95/8,211.36
  6. Step 6: Final answer
    x = 5,740.85

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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.