Home / 8,619.85-12,927.03-2,775.09

Finding the Fourth Proportional to 8,619.85, 12,927.03 and 2,775.09

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Solution

The fourth proportional to 8,619.85, 12,927.03 and 2,775.09 is: 4,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.85 : 12,927.03 = 2,775.09 : x
  2. Step 2: Convert to fraction form
    8,619.85/12,927.03 = 2,775.09/x
  3. Step 3: Cross multiply
    8,619.85x = 12,927.03 × 2,775.09
  4. Step 4: Simplify right side
    8,619.85x = 35,873,709.75
  5. Step 5: Solve for x
    x = 35,873,709.75/8,619.85
  6. Step 6: Final answer
    x = 4,161.76

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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.