Home / 3,936.55-5,901.18-1,986.49

Finding the Fourth Proportional to 3,936.55, 5,901.18 and 1,986.49

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Solution

The fourth proportional to 3,936.55, 5,901.18 and 1,986.49 is: 2,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.55 : 5,901.18 = 1,986.49 : x
  2. Step 2: Convert to fraction form
    3,936.55/5,901.18 = 1,986.49/x
  3. Step 3: Cross multiply
    3,936.55x = 5,901.18 × 1,986.49
  4. Step 4: Simplify right side
    3,936.55x = 11,722,635.06
  5. Step 5: Solve for x
    x = 11,722,635.06/3,936.55
  6. Step 6: Final answer
    x = 2,977.90

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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.