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Finding the Fourth Proportional to 8,309.99, 11,469.03 and 5,329.19

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Solution

The fourth proportional to 8,309.99, 11,469.03 and 5,329.19 is: 7,355.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.99 : 11,469.03 = 5,329.19 : x
  2. Step 2: Convert to fraction form
    8,309.99/11,469.03 = 5,329.19/x
  3. Step 3: Cross multiply
    8,309.99x = 11,469.03 × 5,329.19
  4. Step 4: Simplify right side
    8,309.99x = 61,120,639.99
  5. Step 5: Solve for x
    x = 61,120,639.99/8,309.99
  6. Step 6: Final answer
    x = 7,355.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.