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Finding the Fourth Proportional to 7,169.78, 9,894.26 and 4,025.96

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Solution

The fourth proportional to 7,169.78, 9,894.26 and 4,025.96 is: 5,555.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,169.78 : 9,894.26 = 4,025.96 : x
  2. Step 2: Convert to fraction form
    7,169.78/9,894.26 = 4,025.96/x
  3. Step 3: Cross multiply
    7,169.78x = 9,894.26 × 4,025.96
  4. Step 4: Simplify right side
    7,169.78x = 39,833,894.99
  5. Step 5: Solve for x
    x = 39,833,894.99/7,169.78
  6. Step 6: Final answer
    x = 5,555.80

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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.