Home / 5,240.00-7,860.39-3,992.64

Finding the Fourth Proportional to 5,240.00, 7,860.39 and 3,992.64

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Solution

The fourth proportional to 5,240.00, 7,860.39 and 3,992.64 is: 5,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.00 : 7,860.39 = 3,992.64 : x
  2. Step 2: Convert to fraction form
    5,240.00/7,860.39 = 3,992.64/x
  3. Step 3: Cross multiply
    5,240.00x = 7,860.39 × 3,992.64
  4. Step 4: Simplify right side
    5,240.00x = 31,383,704.49
  5. Step 5: Solve for x
    x = 31,383,704.49/5,240.00
  6. Step 6: Final answer
    x = 5,989.26

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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.