Home / 2,122.18-3,183.88-889.76

Finding the Fourth Proportional to 2,122.18, 3,183.88 and 889.76

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Solution

The fourth proportional to 2,122.18, 3,183.88 and 889.76 is: 1,334.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.18 : 3,183.88 = 889.76 : x
  2. Step 2: Convert to fraction form
    2,122.18/3,183.88 = 889.76/x
  3. Step 3: Cross multiply
    2,122.18x = 3,183.88 × 889.76
  4. Step 4: Simplify right side
    2,122.18x = 2,832,889.07
  5. Step 5: Solve for x
    x = 2,832,889.07/2,122.18
  6. Step 6: Final answer
    x = 1,334.90

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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.