Home / 3,977.51-5,966.19-1,380.38

Finding the Fourth Proportional to 3,977.51, 5,966.19 and 1,380.38

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Solution

The fourth proportional to 3,977.51, 5,966.19 and 1,380.38 is: 2,070.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.51 : 5,966.19 = 1,380.38 : x
  2. Step 2: Convert to fraction form
    3,977.51/5,966.19 = 1,380.38/x
  3. Step 3: Cross multiply
    3,977.51x = 5,966.19 × 1,380.38
  4. Step 4: Simplify right side
    3,977.51x = 8,235,579.52
  5. Step 5: Solve for x
    x = 8,235,579.52/3,977.51
  6. Step 6: Final answer
    x = 2,070.54

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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.