Home / 5,119.78-7,679.76-1,833.70

Finding the Fourth Proportional to 5,119.78, 7,679.76 and 1,833.70

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Solution

The fourth proportional to 5,119.78, 7,679.76 and 1,833.70 is: 2,750.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.78 : 7,679.76 = 1,833.70 : x
  2. Step 2: Convert to fraction form
    5,119.78/7,679.76 = 1,833.70/x
  3. Step 3: Cross multiply
    5,119.78x = 7,679.76 × 1,833.70
  4. Step 4: Simplify right side
    5,119.78x = 14,082,375.91
  5. Step 5: Solve for x
    x = 14,082,375.91/5,119.78
  6. Step 6: Final answer
    x = 2,750.58

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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.