Home / 3,619.00-5,427.11-1,278.56

Finding the Fourth Proportional to 3,619.00, 5,427.11 and 1,278.56

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Solution

The fourth proportional to 3,619.00, 5,427.11 and 1,278.56 is: 1,917.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.00 : 5,427.11 = 1,278.56 : x
  2. Step 2: Convert to fraction form
    3,619.00/5,427.11 = 1,278.56/x
  3. Step 3: Cross multiply
    3,619.00x = 5,427.11 × 1,278.56
  4. Step 4: Simplify right side
    3,619.00x = 6,938,902.53
  5. Step 5: Solve for x
    x = 6,938,902.53/3,619.00
  6. Step 6: Final answer
    x = 1,917.35

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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.