Home / 3,183.90-4,392.36-2,065.20

Finding the Fourth Proportional to 3,183.90, 4,392.36 and 2,065.20

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Solution

The fourth proportional to 3,183.90, 4,392.36 and 2,065.20 is: 2,849.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,183.90 : 4,392.36 = 2,065.20 : x
  2. Step 2: Convert to fraction form
    3,183.90/4,392.36 = 2,065.20/x
  3. Step 3: Cross multiply
    3,183.90x = 4,392.36 × 2,065.20
  4. Step 4: Simplify right side
    3,183.90x = 9,071,101.87
  5. Step 5: Solve for x
    x = 9,071,101.87/3,183.90
  6. Step 6: Final answer
    x = 2,849.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.