Home / 2,490.81-3,728.85-2,183.24

Finding the Fourth Proportional to 2,490.81, 3,728.85 and 2,183.24

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Solution

The fourth proportional to 2,490.81, 3,728.85 and 2,183.24 is: 3,268.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,490.81 : 3,728.85 = 2,183.24 : x
  2. Step 2: Convert to fraction form
    2,490.81/3,728.85 = 2,183.24/x
  3. Step 3: Cross multiply
    2,490.81x = 3,728.85 × 2,183.24
  4. Step 4: Simplify right side
    2,490.81x = 8,140,974.47
  5. Step 5: Solve for x
    x = 8,140,974.47/2,490.81
  6. Step 6: Final answer
    x = 3,268.40

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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.