Home / 3,992.94-5,987.34-1,218.96

Finding the Fourth Proportional to 3,992.94, 5,987.34 and 1,218.96

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Solution

The fourth proportional to 3,992.94, 5,987.34 and 1,218.96 is: 1,827.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.94 : 5,987.34 = 1,218.96 : x
  2. Step 2: Convert to fraction form
    3,992.94/5,987.34 = 1,218.96/x
  3. Step 3: Cross multiply
    3,992.94x = 5,987.34 × 1,218.96
  4. Step 4: Simplify right side
    3,992.94x = 7,298,327.97
  5. Step 5: Solve for x
    x = 7,298,327.97/3,992.94
  6. Step 6: Final answer
    x = 1,827.81

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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.