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Finding the Fourth Proportional to 5,255.28, 7,879.95 and 4,808.43

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Solution

The fourth proportional to 5,255.28, 7,879.95 and 4,808.43 is: 7,209.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.28 : 7,879.95 = 4,808.43 : x
  2. Step 2: Convert to fraction form
    5,255.28/7,879.95 = 4,808.43/x
  3. Step 3: Cross multiply
    5,255.28x = 7,879.95 × 4,808.43
  4. Step 4: Simplify right side
    5,255.28x = 37,890,187.98
  5. Step 5: Solve for x
    x = 37,890,187.98/5,255.28
  6. Step 6: Final answer
    x = 7,209.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.