Home / 3,992.16-5,986.23-1,218.18

Finding the Fourth Proportional to 3,992.16, 5,986.23 and 1,218.18

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Solution

The fourth proportional to 3,992.16, 5,986.23 and 1,218.18 is: 1,826.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.16 : 5,986.23 = 1,218.18 : x
  2. Step 2: Convert to fraction form
    3,992.16/5,986.23 = 1,218.18/x
  3. Step 3: Cross multiply
    3,992.16x = 5,986.23 × 1,218.18
  4. Step 4: Simplify right side
    3,992.16x = 7,292,305.66
  5. Step 5: Solve for x
    x = 7,292,305.66/3,992.16
  6. Step 6: Final answer
    x = 1,826.66

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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.