Home / 8,168.24-11,267.16-7,122.80

Finding the Fourth Proportional to 8,168.24, 11,267.16 and 7,122.80

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Solution

The fourth proportional to 8,168.24, 11,267.16 and 7,122.80 is: 9,825.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.24 : 11,267.16 = 7,122.80 : x
  2. Step 2: Convert to fraction form
    8,168.24/11,267.16 = 7,122.80/x
  3. Step 3: Cross multiply
    8,168.24x = 11,267.16 × 7,122.80
  4. Step 4: Simplify right side
    8,168.24x = 80,253,727.25
  5. Step 5: Solve for x
    x = 80,253,727.25/8,168.24
  6. Step 6: Final answer
    x = 9,825.09

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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.