Home / 3,986.19-5,979.36-2,230.20

Finding the Fourth Proportional to 3,986.19, 5,979.36 and 2,230.20

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Solution

The fourth proportional to 3,986.19, 5,979.36 and 2,230.20 is: 3,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.19 : 5,979.36 = 2,230.20 : x
  2. Step 2: Convert to fraction form
    3,986.19/5,979.36 = 2,230.20/x
  3. Step 3: Cross multiply
    3,986.19x = 5,979.36 × 2,230.20
  4. Step 4: Simplify right side
    3,986.19x = 13,335,168.67
  5. Step 5: Solve for x
    x = 13,335,168.67/3,986.19
  6. Step 6: Final answer
    x = 3,345.34

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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.