Home / 3,009.78-4,512.92-1,253.30

Finding the Fourth Proportional to 3,009.78, 4,512.92 and 1,253.30

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Solution

The fourth proportional to 3,009.78, 4,512.92 and 1,253.30 is: 1,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.78 : 4,512.92 = 1,253.30 : x
  2. Step 2: Convert to fraction form
    3,009.78/4,512.92 = 1,253.30/x
  3. Step 3: Cross multiply
    3,009.78x = 4,512.92 × 1,253.30
  4. Step 4: Simplify right side
    3,009.78x = 5,656,042.64
  5. Step 5: Solve for x
    x = 5,656,042.64/3,009.78
  6. Step 6: Final answer
    x = 1,879.22

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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.