Home / 3,977.40-5,966.10-2,134.20

Finding the Fourth Proportional to 3,977.40, 5,966.10 and 2,134.20

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Solution

The fourth proportional to 3,977.40, 5,966.10 and 2,134.20 is: 3,201.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.40 : 5,966.10 = 2,134.20 : x
  2. Step 2: Convert to fraction form
    3,977.40/5,966.10 = 2,134.20/x
  3. Step 3: Cross multiply
    3,977.40x = 5,966.10 × 2,134.20
  4. Step 4: Simplify right side
    3,977.40x = 12,732,850.62
  5. Step 5: Solve for x
    x = 12,732,850.62/3,977.40
  6. Step 6: Final answer
    x = 3,201.30

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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.