Home / 8,311.70-12,469.58-2,765.03

Finding the Fourth Proportional to 8,311.70, 12,469.58 and 2,765.03

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Solution

The fourth proportional to 8,311.70, 12,469.58 and 2,765.03 is: 4,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.70 : 12,469.58 = 2,765.03 : x
  2. Step 2: Convert to fraction form
    8,311.70/12,469.58 = 2,765.03/x
  3. Step 3: Cross multiply
    8,311.70x = 12,469.58 × 2,765.03
  4. Step 4: Simplify right side
    8,311.70x = 34,478,686.61
  5. Step 5: Solve for x
    x = 34,478,686.61/8,311.70
  6. Step 6: Final answer
    x = 4,148.21

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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.