Home / 9,355.50-12,910.59-5,163.75

Finding the Fourth Proportional to 9,355.50, 12,910.59 and 5,163.75

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Solution

The fourth proportional to 9,355.50, 12,910.59 and 5,163.75 is: 7,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.50 : 12,910.59 = 5,163.75 : x
  2. Step 2: Convert to fraction form
    9,355.50/12,910.59 = 5,163.75/x
  3. Step 3: Cross multiply
    9,355.50x = 12,910.59 × 5,163.75
  4. Step 4: Simplify right side
    9,355.50x = 66,667,059.11
  5. Step 5: Solve for x
    x = 66,667,059.11/9,355.50
  6. Step 6: Final answer
    x = 7,125.98

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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.