Home / 3,918.88-5,879.10-1,322.56

Finding the Fourth Proportional to 3,918.88, 5,879.10 and 1,322.56

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Solution

The fourth proportional to 3,918.88, 5,879.10 and 1,322.56 is: 1,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.88 : 5,879.10 = 1,322.56 : x
  2. Step 2: Convert to fraction form
    3,918.88/5,879.10 = 1,322.56/x
  3. Step 3: Cross multiply
    3,918.88x = 5,879.10 × 1,322.56
  4. Step 4: Simplify right side
    3,918.88x = 7,775,462.50
  5. Step 5: Solve for x
    x = 7,775,462.50/3,918.88
  6. Step 6: Final answer
    x = 1,984.10

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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.