Home / 1,679.29-2,519.79-1,188.85

Finding the Fourth Proportional to 1,679.29, 2,519.79 and 1,188.85

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Solution

The fourth proportional to 1,679.29, 2,519.79 and 1,188.85 is: 1,783.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.29 : 2,519.79 = 1,188.85 : x
  2. Step 2: Convert to fraction form
    1,679.29/2,519.79 = 1,188.85/x
  3. Step 3: Cross multiply
    1,679.29x = 2,519.79 × 1,188.85
  4. Step 4: Simplify right side
    1,679.29x = 2,995,652.34
  5. Step 5: Solve for x
    x = 2,995,652.34/1,679.29
  6. Step 6: Final answer
    x = 1,783.88

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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.