Home / 2,122.32-3,183.48-1,690.32

Finding the Fourth Proportional to 2,122.32, 3,183.48 and 1,690.32

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Solution

The fourth proportional to 2,122.32, 3,183.48 and 1,690.32 is: 2,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.32 : 3,183.48 = 1,690.32 : x
  2. Step 2: Convert to fraction form
    2,122.32/3,183.48 = 1,690.32/x
  3. Step 3: Cross multiply
    2,122.32x = 3,183.48 × 1,690.32
  4. Step 4: Simplify right side
    2,122.32x = 5,381,099.91
  5. Step 5: Solve for x
    x = 5,381,099.91/2,122.32
  6. Step 6: Final answer
    x = 2,535.48

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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.