Home / 2,189.46-3,021.52-1,338.85

Finding the Fourth Proportional to 2,189.46, 3,021.52 and 1,338.85

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Solution

The fourth proportional to 2,189.46, 3,021.52 and 1,338.85 is: 1,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.46 : 3,021.52 = 1,338.85 : x
  2. Step 2: Convert to fraction form
    2,189.46/3,021.52 = 1,338.85/x
  3. Step 3: Cross multiply
    2,189.46x = 3,021.52 × 1,338.85
  4. Step 4: Simplify right side
    2,189.46x = 4,045,362.05
  5. Step 5: Solve for x
    x = 4,045,362.05/2,189.46
  6. Step 6: Final answer
    x = 1,847.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.