Home / 8,540.80-12,811.40-3,000.52

Finding the Fourth Proportional to 8,540.80, 12,811.40 and 3,000.52

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Solution

The fourth proportional to 8,540.80, 12,811.40 and 3,000.52 is: 4,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,540.80 : 12,811.40 = 3,000.52 : x
  2. Step 2: Convert to fraction form
    8,540.80/12,811.40 = 3,000.52/x
  3. Step 3: Cross multiply
    8,540.80x = 12,811.40 × 3,000.52
  4. Step 4: Simplify right side
    8,540.80x = 38,440,861.93
  5. Step 5: Solve for x
    x = 38,440,861.93/8,540.80
  6. Step 6: Final answer
    x = 4,500.85

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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.