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Finding the Fourth Proportional to 7,887.87, 11,839.10 and 3,995.01

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Solution

The fourth proportional to 7,887.87, 11,839.10 and 3,995.01 is: 5,996.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.87 : 11,839.10 = 3,995.01 : x
  2. Step 2: Convert to fraction form
    7,887.87/11,839.10 = 3,995.01/x
  3. Step 3: Cross multiply
    7,887.87x = 11,839.10 × 3,995.01
  4. Step 4: Simplify right side
    7,887.87x = 47,297,302.92
  5. Step 5: Solve for x
    x = 47,297,302.92/7,887.87
  6. Step 6: Final answer
    x = 5,996.21

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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.