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Finding the Fourth Proportional to 7,919.67, 11,874.50 and 6,745.07

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Solution

The fourth proportional to 7,919.67, 11,874.50 and 6,745.07 is: 10,113.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.67 : 11,874.50 = 6,745.07 : x
  2. Step 2: Convert to fraction form
    7,919.67/11,874.50 = 6,745.07/x
  3. Step 3: Cross multiply
    7,919.67x = 11,874.50 × 6,745.07
  4. Step 4: Simplify right side
    7,919.67x = 80,094,354.97
  5. Step 5: Solve for x
    x = 80,094,354.97/7,919.67
  6. Step 6: Final answer
    x = 10,113.34

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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.