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Finding the Fourth Proportional to 6,745.62, 10,119.05 and 1,815.15

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Solution

The fourth proportional to 6,745.62, 10,119.05 and 1,815.15 is: 2,722.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,745.62 : 10,119.05 = 1,815.15 : x
  2. Step 2: Convert to fraction form
    6,745.62/10,119.05 = 1,815.15/x
  3. Step 3: Cross multiply
    6,745.62x = 10,119.05 × 1,815.15
  4. Step 4: Simplify right side
    6,745.62x = 18,367,584.53
  5. Step 5: Solve for x
    x = 18,367,584.53/6,745.62
  6. Step 6: Final answer
    x = 2,722.89

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1.5x scale

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.