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Finding the Fourth Proportional to 7,455.90, 11,183.49 and 2,775.90

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Solution

The fourth proportional to 7,455.90, 11,183.49 and 2,775.90 is: 4,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,455.90 : 11,183.49 = 2,775.90 : x
  2. Step 2: Convert to fraction form
    7,455.90/11,183.49 = 2,775.90/x
  3. Step 3: Cross multiply
    7,455.90x = 11,183.49 × 2,775.90
  4. Step 4: Simplify right side
    7,455.90x = 31,044,249.89
  5. Step 5: Solve for x
    x = 31,044,249.89/7,455.90
  6. Step 6: Final answer
    x = 4,163.72

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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.