Home / 8,790.68-13,175.21-5,453.78

Finding the Fourth Proportional to 8,790.68, 13,175.21 and 5,453.78

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Solution

The fourth proportional to 8,790.68, 13,175.21 and 5,453.78 is: 8,173.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.68 : 13,175.21 = 5,453.78 : x
  2. Step 2: Convert to fraction form
    8,790.68/13,175.21 = 5,453.78/x
  3. Step 3: Cross multiply
    8,790.68x = 13,175.21 × 5,453.78
  4. Step 4: Simplify right side
    8,790.68x = 71,854,687.99
  5. Step 5: Solve for x
    x = 71,854,687.99/8,790.68
  6. Step 6: Final answer
    x = 8,173.97

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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.