Home / 8,778.74-13,167.99-2,855.90

Finding the Fourth Proportional to 8,778.74, 13,167.99 and 2,855.90

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Solution

The fourth proportional to 8,778.74, 13,167.99 and 2,855.90 is: 4,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.74 : 13,167.99 = 2,855.90 : x
  2. Step 2: Convert to fraction form
    8,778.74/13,167.99 = 2,855.90/x
  3. Step 3: Cross multiply
    8,778.74x = 13,167.99 × 2,855.90
  4. Step 4: Simplify right side
    8,778.74x = 37,606,396.80
  5. Step 5: Solve for x
    x = 37,606,396.80/8,778.74
  6. Step 6: Final answer
    x = 4,283.81

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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.