Home / 9,355.53-12,910.55-5,163.78

Finding the Fourth Proportional to 9,355.53, 12,910.55 and 5,163.78

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Solution

The fourth proportional to 9,355.53, 12,910.55 and 5,163.78 is: 7,125.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.53 : 12,910.55 = 5,163.78 : x
  2. Step 2: Convert to fraction form
    9,355.53/12,910.55 = 5,163.78/x
  3. Step 3: Cross multiply
    9,355.53x = 12,910.55 × 5,163.78
  4. Step 4: Simplify right side
    9,355.53x = 66,667,239.88
  5. Step 5: Solve for x
    x = 66,667,239.88/9,355.53
  6. Step 6: Final answer
    x = 7,125.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.