Home / 7,999.19-11,997.98-2,156.39

Finding the Fourth Proportional to 7,999.19, 11,997.98 and 2,156.39

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Solution

The fourth proportional to 7,999.19, 11,997.98 and 2,156.39 is: 3,234.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.19 : 11,997.98 = 2,156.39 : x
  2. Step 2: Convert to fraction form
    7,999.19/11,997.98 = 2,156.39/x
  3. Step 3: Cross multiply
    7,999.19x = 11,997.98 × 2,156.39
  4. Step 4: Simplify right side
    7,999.19x = 25,872,313.31
  5. Step 5: Solve for x
    x = 25,872,313.31/7,999.19
  6. Step 6: Final answer
    x = 3,234.37

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1.5x scale

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.