Home / 3,977.96-5,969.66-1,380.88

Finding the Fourth Proportional to 3,977.96, 5,969.66 and 1,380.88

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Solution

The fourth proportional to 3,977.96, 5,969.66 and 1,380.88 is: 2,072.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.96 : 5,969.66 = 1,380.88 : x
  2. Step 2: Convert to fraction form
    3,977.96/5,969.66 = 1,380.88/x
  3. Step 3: Cross multiply
    3,977.96x = 5,969.66 × 1,380.88
  4. Step 4: Simplify right side
    3,977.96x = 8,243,384.10
  5. Step 5: Solve for x
    x = 8,243,384.10/3,977.96
  6. Step 6: Final answer
    x = 2,072.26

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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.