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Finding the Fourth Proportional to 11,391.87, 17,089.17 and 4,817.19

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Solution

The fourth proportional to 11,391.87, 17,089.17 and 4,817.19 is: 7,226.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.87 : 17,089.17 = 4,817.19 : x
  2. Step 2: Convert to fraction form
    11,391.87/17,089.17 = 4,817.19/x
  3. Step 3: Cross multiply
    11,391.87x = 17,089.17 × 4,817.19
  4. Step 4: Simplify right side
    11,391.87x = 82,321,754.75
  5. Step 5: Solve for x
    x = 82,321,754.75/11,391.87
  6. Step 6: Final answer
    x = 7,226.36

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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.