Home / 7,439.45-11,149.10-2,755.06

Finding the Fourth Proportional to 7,439.45, 11,149.10 and 2,755.06

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Solution

The fourth proportional to 7,439.45, 11,149.10 and 2,755.06 is: 4,128.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.45 : 11,149.10 = 2,755.06 : x
  2. Step 2: Convert to fraction form
    7,439.45/11,149.10 = 2,755.06/x
  3. Step 3: Cross multiply
    7,439.45x = 11,149.10 × 2,755.06
  4. Step 4: Simplify right side
    7,439.45x = 30,716,369.93
  5. Step 5: Solve for x
    x = 30,716,369.93/7,439.45
  6. Step 6: Final answer
    x = 4,128.85

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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.