Home / 8,120.80-12,173.84-2,923

Finding the Fourth Proportional to 8,120.80, 12,173.84 and 2,923

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Solution

The fourth proportional to 8,120.80, 12,173.84 and 2,923 is: 4,381.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.80 : 12,173.84 = 2,923 : x
  2. Step 2: Convert to fraction form
    8,120.80/12,173.84 = 2,923/x
  3. Step 3: Cross multiply
    8,120.80x = 12,173.84 × 2,923
  4. Step 4: Simplify right side
    8,120.80x = 35,584,134.32
  5. Step 5: Solve for x
    x = 35,584,134.32/8,120.80
  6. Step 6: Final answer
    x = 4,381.85

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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.