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Finding the Fourth Proportional to 5,422.36, 8,091.99 and 4,839.16

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Solution

The fourth proportional to 5,422.36, 8,091.99 and 4,839.16 is: 7,221.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,422.36 : 8,091.99 = 4,839.16 : x
  2. Step 2: Convert to fraction form
    5,422.36/8,091.99 = 4,839.16/x
  3. Step 3: Cross multiply
    5,422.36x = 8,091.99 × 4,839.16
  4. Step 4: Simplify right side
    5,422.36x = 39,158,434.33
  5. Step 5: Solve for x
    x = 39,158,434.33/5,422.36
  6. Step 6: Final answer
    x = 7,221.66

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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.