Home / 3,936.56-5,908.50-1,990.14

Finding the Fourth Proportional to 3,936.56, 5,908.50 and 1,990.14

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Solution

The fourth proportional to 3,936.56, 5,908.50 and 1,990.14 is: 2,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.56 : 5,908.50 = 1,990.14 : x
  2. Step 2: Convert to fraction form
    3,936.56/5,908.50 = 1,990.14/x
  3. Step 3: Cross multiply
    3,936.56x = 5,908.50 × 1,990.14
  4. Step 4: Simplify right side
    3,936.56x = 11,758,742.19
  5. Step 5: Solve for x
    x = 11,758,742.19/3,936.56
  6. Step 6: Final answer
    x = 2,987.06

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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.