Home / 3,918.15-5,879.49-1,577.79

Finding the Fourth Proportional to 3,918.15, 5,879.49 and 1,577.79

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Solution

The fourth proportional to 3,918.15, 5,879.49 and 1,577.79 is: 2,367.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.15 : 5,879.49 = 1,577.79 : x
  2. Step 2: Convert to fraction form
    3,918.15/5,879.49 = 1,577.79/x
  3. Step 3: Cross multiply
    3,918.15x = 5,879.49 × 1,577.79
  4. Step 4: Simplify right side
    3,918.15x = 9,276,600.53
  5. Step 5: Solve for x
    x = 9,276,600.53/3,918.15
  6. Step 6: Final answer
    x = 2,367.60

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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.