Home / 3,720.87-5,577.66-1,379.16

Finding the Fourth Proportional to 3,720.87, 5,577.66 and 1,379.16

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Solution

The fourth proportional to 3,720.87, 5,577.66 and 1,379.16 is: 2,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.87 : 5,577.66 = 1,379.16 : x
  2. Step 2: Convert to fraction form
    3,720.87/5,577.66 = 1,379.16/x
  3. Step 3: Cross multiply
    3,720.87x = 5,577.66 × 1,379.16
  4. Step 4: Simplify right side
    3,720.87x = 7,692,485.57
  5. Step 5: Solve for x
    x = 7,692,485.57/3,720.87
  6. Step 6: Final answer
    x = 2,067.39

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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.