Home / 5,178.78-7,769.38-1,481.06

Finding the Fourth Proportional to 5,178.78, 7,769.38 and 1,481.06

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Solution

The fourth proportional to 5,178.78, 7,769.38 and 1,481.06 is: 2,221.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.78 : 7,769.38 = 1,481.06 : x
  2. Step 2: Convert to fraction form
    5,178.78/7,769.38 = 1,481.06/x
  3. Step 3: Cross multiply
    5,178.78x = 7,769.38 × 1,481.06
  4. Step 4: Simplify right side
    5,178.78x = 11,506,917.94
  5. Step 5: Solve for x
    x = 11,506,917.94/5,178.78
  6. Step 6: Final answer
    x = 2,221.94

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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.