Home / 3,619.26-5,427.10-1,278.67

Finding the Fourth Proportional to 3,619.26, 5,427.10 and 1,278.67

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Solution

The fourth proportional to 3,619.26, 5,427.10 and 1,278.67 is: 1,917.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.26 : 5,427.10 = 1,278.67 : x
  2. Step 2: Convert to fraction form
    3,619.26/5,427.10 = 1,278.67/x
  3. Step 3: Cross multiply
    3,619.26x = 5,427.10 × 1,278.67
  4. Step 4: Simplify right side
    3,619.26x = 6,939,469.96
  5. Step 5: Solve for x
    x = 6,939,469.96/3,619.26
  6. Step 6: Final answer
    x = 1,917.37

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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.