Home / 7,163.28-10,745.52-2,780.40

Finding the Fourth Proportional to 7,163.28, 10,745.52 and 2,780.40

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Solution

The fourth proportional to 7,163.28, 10,745.52 and 2,780.40 is: 4,170.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.28 : 10,745.52 = 2,780.40 : x
  2. Step 2: Convert to fraction form
    7,163.28/10,745.52 = 2,780.40/x
  3. Step 3: Cross multiply
    7,163.28x = 10,745.52 × 2,780.40
  4. Step 4: Simplify right side
    7,163.28x = 29,876,843.81
  5. Step 5: Solve for x
    x = 29,876,843.81/7,163.28
  6. Step 6: Final answer
    x = 4,170.83

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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.