Home / 5,679.82-8,519.73-2,390.78

Finding the Fourth Proportional to 5,679.82, 8,519.73 and 2,390.78

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Solution

The fourth proportional to 5,679.82, 8,519.73 and 2,390.78 is: 3,586.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.82 : 8,519.73 = 2,390.78 : x
  2. Step 2: Convert to fraction form
    5,679.82/8,519.73 = 2,390.78/x
  3. Step 3: Cross multiply
    5,679.82x = 8,519.73 × 2,390.78
  4. Step 4: Simplify right side
    5,679.82x = 20,368,789.93
  5. Step 5: Solve for x
    x = 20,368,789.93/5,679.82
  6. Step 6: Final answer
    x = 3,586.17

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1.5x scale

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.