Home / 4,183.49-6,275.30-1,991.78

Finding the Fourth Proportional to 4,183.49, 6,275.30 and 1,991.78

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Solution

The fourth proportional to 4,183.49, 6,275.30 and 1,991.78 is: 2,987.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,183.49 : 6,275.30 = 1,991.78 : x
  2. Step 2: Convert to fraction form
    4,183.49/6,275.30 = 1,991.78/x
  3. Step 3: Cross multiply
    4,183.49x = 6,275.30 × 1,991.78
  4. Step 4: Simplify right side
    4,183.49x = 12,498,975.70
  5. Step 5: Solve for x
    x = 12,498,975.70/4,183.49
  6. Step 6: Final answer
    x = 2,987.69

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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.