Home / 3,977.26-5,965.90-1,380.20

Finding the Fourth Proportional to 3,977.26, 5,965.90 and 1,380.20

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Solution

The fourth proportional to 3,977.26, 5,965.90 and 1,380.20 is: 2,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.26 : 5,965.90 = 1,380.20 : x
  2. Step 2: Convert to fraction form
    3,977.26/5,965.90 = 1,380.20/x
  3. Step 3: Cross multiply
    3,977.26x = 5,965.90 × 1,380.20
  4. Step 4: Simplify right side
    3,977.26x = 8,234,135.18
  5. Step 5: Solve for x
    x = 8,234,135.18/3,977.26
  6. Step 6: Final answer
    x = 2,070.30

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1.5x scale

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.