Home / 3,936.24-5,904.72-1,987.92

Finding the Fourth Proportional to 3,936.24, 5,904.72 and 1,987.92

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Solution

The fourth proportional to 3,936.24, 5,904.72 and 1,987.92 is: 2,982.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.24 : 5,904.72 = 1,987.92 : x
  2. Step 2: Convert to fraction form
    3,936.24/5,904.72 = 1,987.92/x
  3. Step 3: Cross multiply
    3,936.24x = 5,904.72 × 1,987.92
  4. Step 4: Simplify right side
    3,936.24x = 11,738,110.98
  5. Step 5: Solve for x
    x = 11,738,110.98/3,936.24
  6. Step 6: Final answer
    x = 2,982.06

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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.