Home / 9,141.92-12,615.24-5,163.20

Finding the Fourth Proportional to 9,141.92, 12,615.24 and 5,163.20

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Solution

The fourth proportional to 9,141.92, 12,615.24 and 5,163.20 is: 7,124.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,141.92 : 12,615.24 = 5,163.20 : x
  2. Step 2: Convert to fraction form
    9,141.92/12,615.24 = 5,163.20/x
  3. Step 3: Cross multiply
    9,141.92x = 12,615.24 × 5,163.20
  4. Step 4: Simplify right side
    9,141.92x = 65,135,007.17
  5. Step 5: Solve for x
    x = 65,135,007.17/9,141.92
  6. Step 6: Final answer
    x = 7,124.87

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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.