Home / 5,418.20-8,091.13-5,141.42

Finding the Fourth Proportional to 5,418.20, 8,091.13 and 5,141.42

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Solution

The fourth proportional to 5,418.20, 8,091.13 and 5,141.42 is: 7,677.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.20 : 8,091.13 = 5,141.42 : x
  2. Step 2: Convert to fraction form
    5,418.20/8,091.13 = 5,141.42/x
  3. Step 3: Cross multiply
    5,418.20x = 8,091.13 × 5,141.42
  4. Step 4: Simplify right side
    5,418.20x = 41,599,897.60
  5. Step 5: Solve for x
    x = 41,599,897.60/5,418.20
  6. Step 6: Final answer
    x = 7,677.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.