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Finding the Fourth Proportional to 7,999.68, 11,043.09 and 5,168.43

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Solution

The fourth proportional to 7,999.68, 11,043.09 and 5,168.43 is: 7,134.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.68 : 11,043.09 = 5,168.43 : x
  2. Step 2: Convert to fraction form
    7,999.68/11,043.09 = 5,168.43/x
  3. Step 3: Cross multiply
    7,999.68x = 11,043.09 × 5,168.43
  4. Step 4: Simplify right side
    7,999.68x = 57,075,436.66
  5. Step 5: Solve for x
    x = 57,075,436.66/7,999.68
  6. Step 6: Final answer
    x = 7,134.71

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1.5x scale

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.