Home / 8,519.96-12,775.62-3,899

Finding the Fourth Proportional to 8,519.96, 12,775.62 and 3,899

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Solution

The fourth proportional to 8,519.96, 12,775.62 and 3,899 is: 5,846.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.96 : 12,775.62 = 3,899 : x
  2. Step 2: Convert to fraction form
    8,519.96/12,775.62 = 3,899/x
  3. Step 3: Cross multiply
    8,519.96x = 12,775.62 × 3,899
  4. Step 4: Simplify right side
    8,519.96x = 49,812,142.38
  5. Step 5: Solve for x
    x = 49,812,142.38/8,519.96
  6. Step 6: Final answer
    x = 5,846.52

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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.