Home / 3,992.35-5,986.48-2,145.02

Finding the Fourth Proportional to 3,992.35, 5,986.48 and 2,145.02

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Solution

The fourth proportional to 3,992.35, 5,986.48 and 2,145.02 is: 3,216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.35 : 5,986.48 = 2,145.02 : x
  2. Step 2: Convert to fraction form
    3,992.35/5,986.48 = 2,145.02/x
  3. Step 3: Cross multiply
    3,992.35x = 5,986.48 × 2,145.02
  4. Step 4: Simplify right side
    3,992.35x = 12,841,119.33
  5. Step 5: Solve for x
    x = 12,841,119.33/3,992.35
  6. Step 6: Final answer
    x = 3,216.43

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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.