Home / 8,147.88-11,245.28-5,163.98

Finding the Fourth Proportional to 8,147.88, 11,245.28 and 5,163.98

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Solution

The fourth proportional to 8,147.88, 11,245.28 and 5,163.98 is: 7,127.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.88 : 11,245.28 = 5,163.98 : x
  2. Step 2: Convert to fraction form
    8,147.88/11,245.28 = 5,163.98/x
  3. Step 3: Cross multiply
    8,147.88x = 11,245.28 × 5,163.98
  4. Step 4: Simplify right side
    8,147.88x = 58,070,401.01
  5. Step 5: Solve for x
    x = 58,070,401.01/8,147.88
  6. Step 6: Final answer
    x = 7,127.06

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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.