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Finding the Fourth Proportional to 8,891.05, 13,340.74 and 3,892.79

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Solution

The fourth proportional to 8,891.05, 13,340.74 and 3,892.79 is: 5,841.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.05 : 13,340.74 = 3,892.79 : x
  2. Step 2: Convert to fraction form
    8,891.05/13,340.74 = 3,892.79/x
  3. Step 3: Cross multiply
    8,891.05x = 13,340.74 × 3,892.79
  4. Step 4: Simplify right side
    8,891.05x = 51,932,699.26
  5. Step 5: Solve for x
    x = 51,932,699.26/8,891.05
  6. Step 6: Final answer
    x = 5,841.01

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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.