Home / 8,639.25-11,922.30-5,499.69

Finding the Fourth Proportional to 8,639.25, 11,922.30 and 5,499.69

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Solution

The fourth proportional to 8,639.25, 11,922.30 and 5,499.69 is: 7,589.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.25 : 11,922.30 = 5,499.69 : x
  2. Step 2: Convert to fraction form
    8,639.25/11,922.30 = 5,499.69/x
  3. Step 3: Cross multiply
    8,639.25x = 11,922.30 × 5,499.69
  4. Step 4: Simplify right side
    8,639.25x = 65,568,954.09
  5. Step 5: Solve for x
    x = 65,568,954.09/8,639.25
  6. Step 6: Final answer
    x = 7,589.66

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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.