Home / 8,091.20-11,171.39-6,199.45

Finding the Fourth Proportional to 8,091.20, 11,171.39 and 6,199.45

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Solution

The fourth proportional to 8,091.20, 11,171.39 and 6,199.45 is: 8,559.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.20 : 11,171.39 = 6,199.45 : x
  2. Step 2: Convert to fraction form
    8,091.20/11,171.39 = 6,199.45/x
  3. Step 3: Cross multiply
    8,091.20x = 11,171.39 × 6,199.45
  4. Step 4: Simplify right side
    8,091.20x = 69,256,473.74
  5. Step 5: Solve for x
    x = 69,256,473.74/8,091.20
  6. Step 6: Final answer
    x = 8,559.48

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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.