Home / 3,278.31-4,918.38-1,429.59

Finding the Fourth Proportional to 3,278.31, 4,918.38 and 1,429.59

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Solution

The fourth proportional to 3,278.31, 4,918.38 and 1,429.59 is: 2,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.31 : 4,918.38 = 1,429.59 : x
  2. Step 2: Convert to fraction form
    3,278.31/4,918.38 = 1,429.59/x
  3. Step 3: Cross multiply
    3,278.31x = 4,918.38 × 1,429.59
  4. Step 4: Simplify right side
    3,278.31x = 7,031,243.06
  5. Step 5: Solve for x
    x = 7,031,243.06/3,278.31
  6. Step 6: Final answer
    x = 2,144.78

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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.