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Finding the Fourth Proportional to 8,965.91, 13,450.89 and 5,021.12

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Solution

The fourth proportional to 8,965.91, 13,450.89 and 5,021.12 is: 7,532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.91 : 13,450.89 = 5,021.12 : x
  2. Step 2: Convert to fraction form
    8,965.91/13,450.89 = 5,021.12/x
  3. Step 3: Cross multiply
    8,965.91x = 13,450.89 × 5,021.12
  4. Step 4: Simplify right side
    8,965.91x = 67,538,532.80
  5. Step 5: Solve for x
    x = 67,538,532.80/8,965.91
  6. Step 6: Final answer
    x = 7,532.81

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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.