Home / 8,213.58-12,319.98-3,281.88

Finding the Fourth Proportional to 8,213.58, 12,319.98 and 3,281.88

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Solution

The fourth proportional to 8,213.58, 12,319.98 and 3,281.88 is: 4,922.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.58 : 12,319.98 = 3,281.88 : x
  2. Step 2: Convert to fraction form
    8,213.58/12,319.98 = 3,281.88/x
  3. Step 3: Cross multiply
    8,213.58x = 12,319.98 × 3,281.88
  4. Step 4: Simplify right side
    8,213.58x = 40,432,695.96
  5. Step 5: Solve for x
    x = 40,432,695.96/8,213.58
  6. Step 6: Final answer
    x = 4,922.66

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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.