Home / 1,679.28-2,519.78-1,270.92

Finding the Fourth Proportional to 1,679.28, 2,519.78 and 1,270.92

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Solution

The fourth proportional to 1,679.28, 2,519.78 and 1,270.92 is: 1,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.28 : 2,519.78 = 1,270.92 : x
  2. Step 2: Convert to fraction form
    1,679.28/2,519.78 = 1,270.92/x
  3. Step 3: Cross multiply
    1,679.28x = 2,519.78 × 1,270.92
  4. Step 4: Simplify right side
    1,679.28x = 3,202,438.80
  5. Step 5: Solve for x
    x = 3,202,438.80/1,679.28
  6. Step 6: Final answer
    x = 1,907.03

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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.