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Finding the Fourth Proportional to 7,897.88, 11,842.68 and 3,944.90

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Solution

The fourth proportional to 7,897.88, 11,842.68 and 3,944.90 is: 5,915.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897.88 : 11,842.68 = 3,944.90 : x
  2. Step 2: Convert to fraction form
    7,897.88/11,842.68 = 3,944.90/x
  3. Step 3: Cross multiply
    7,897.88x = 11,842.68 × 3,944.90
  4. Step 4: Simplify right side
    7,897.88x = 46,718,188.33
  5. Step 5: Solve for x
    x = 46,718,188.33/7,897.88
  6. Step 6: Final answer
    x = 5,915.28

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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.