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Finding the Fourth Proportional to 7,998.90, 11,999.76 and 3,846.43

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Solution

The fourth proportional to 7,998.90, 11,999.76 and 3,846.43 is: 5,770.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.90 : 11,999.76 = 3,846.43 : x
  2. Step 2: Convert to fraction form
    7,998.90/11,999.76 = 3,846.43/x
  3. Step 3: Cross multiply
    7,998.90x = 11,999.76 × 3,846.43
  4. Step 4: Simplify right side
    7,998.90x = 46,156,236.86
  5. Step 5: Solve for x
    x = 46,156,236.86/7,998.90
  6. Step 6: Final answer
    x = 5,770.32

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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.