Home / 4,183.66-6,271.40-1,991.80

Finding the Fourth Proportional to 4,183.66, 6,271.40 and 1,991.80

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Solution

The fourth proportional to 4,183.66, 6,271.40 and 1,991.80 is: 2,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,183.66 : 6,271.40 = 1,991.80 : x
  2. Step 2: Convert to fraction form
    4,183.66/6,271.40 = 1,991.80/x
  3. Step 3: Cross multiply
    4,183.66x = 6,271.40 × 1,991.80
  4. Step 4: Simplify right side
    4,183.66x = 12,491,348.14
  5. Step 5: Solve for x
    x = 12,491,348.14/4,183.66
  6. Step 6: Final answer
    x = 2,985.75

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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.