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Finding the Fourth Proportional to 7,998.41, 11,990.31 and 2,801.45

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Solution

The fourth proportional to 7,998.41, 11,990.31 and 2,801.45 is: 4,199.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.41 : 11,990.31 = 2,801.45 : x
  2. Step 2: Convert to fraction form
    7,998.41/11,990.31 = 2,801.45/x
  3. Step 3: Cross multiply
    7,998.41x = 11,990.31 × 2,801.45
  4. Step 4: Simplify right side
    7,998.41x = 33,590,253.95
  5. Step 5: Solve for x
    x = 33,590,253.95/7,998.41
  6. Step 6: Final answer
    x = 4,199.62

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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.