Home / 3,072.78-4,609.49-1,125.54

Finding the Fourth Proportional to 3,072.78, 4,609.49 and 1,125.54

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Solution

The fourth proportional to 3,072.78, 4,609.49 and 1,125.54 is: 1,688.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,072.78 : 4,609.49 = 1,125.54 : x
  2. Step 2: Convert to fraction form
    3,072.78/4,609.49 = 1,125.54/x
  3. Step 3: Cross multiply
    3,072.78x = 4,609.49 × 1,125.54
  4. Step 4: Simplify right side
    3,072.78x = 5,188,159.75
  5. Step 5: Solve for x
    x = 5,188,159.75/3,072.78
  6. Step 6: Final answer
    x = 1,688.43

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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.