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Finding the Fourth Proportional to 8,891.91, 13,338.64 and 2,318.09

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Solution

The fourth proportional to 8,891.91, 13,338.64 and 2,318.09 is: 3,477.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.91 : 13,338.64 = 2,318.09 : x
  2. Step 2: Convert to fraction form
    8,891.91/13,338.64 = 2,318.09/x
  3. Step 3: Cross multiply
    8,891.91x = 13,338.64 × 2,318.09
  4. Step 4: Simplify right side
    8,891.91x = 30,920,104.20
  5. Step 5: Solve for x
    x = 30,920,104.20/8,891.91
  6. Step 6: Final answer
    x = 3,477.33

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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.