Home / 8,218.13-11,336.94-5,191.92

Finding the Fourth Proportional to 8,218.13, 11,336.94 and 5,191.92

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Solution

The fourth proportional to 8,218.13, 11,336.94 and 5,191.92 is: 7,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.13 : 11,336.94 = 5,191.92 : x
  2. Step 2: Convert to fraction form
    8,218.13/11,336.94 = 5,191.92/x
  3. Step 3: Cross multiply
    8,218.13x = 11,336.94 × 5,191.92
  4. Step 4: Simplify right side
    8,218.13x = 58,860,485.52
  5. Step 5: Solve for x
    x = 58,860,485.52/8,218.13
  6. Step 6: Final answer
    x = 7,162.28

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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.