Home / 3,617.97-5,427.99-1,278.56

Finding the Fourth Proportional to 3,617.97, 5,427.99 and 1,278.56

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Solution

The fourth proportional to 3,617.97, 5,427.99 and 1,278.56 is: 1,918.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.97 : 5,427.99 = 1,278.56 : x
  2. Step 2: Convert to fraction form
    3,617.97/5,427.99 = 1,278.56/x
  3. Step 3: Cross multiply
    3,617.97x = 5,427.99 × 1,278.56
  4. Step 4: Simplify right side
    3,617.97x = 6,939,983.75
  5. Step 5: Solve for x
    x = 6,939,983.75/3,617.97
  6. Step 6: Final answer
    x = 1,918.20

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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.