Home / 8,939.45-12,338.24-5,163.23

Finding the Fourth Proportional to 8,939.45, 12,338.24 and 5,163.23

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Solution

The fourth proportional to 8,939.45, 12,338.24 and 5,163.23 is: 7,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.45 : 12,338.24 = 5,163.23 : x
  2. Step 2: Convert to fraction form
    8,939.45/12,338.24 = 5,163.23/x
  3. Step 3: Cross multiply
    8,939.45x = 12,338.24 × 5,163.23
  4. Step 4: Simplify right side
    8,939.45x = 63,705,170.92
  5. Step 5: Solve for x
    x = 63,705,170.92/8,939.45
  6. Step 6: Final answer
    x = 7,126.30

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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.