Home / 2,120.42-3,180.84-733.56

Finding the Fourth Proportional to 2,120.42, 3,180.84 and 733.56

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Solution

The fourth proportional to 2,120.42, 3,180.84 and 733.56 is: 1,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.42 : 3,180.84 = 733.56 : x
  2. Step 2: Convert to fraction form
    2,120.42/3,180.84 = 733.56/x
  3. Step 3: Cross multiply
    2,120.42x = 3,180.84 × 733.56
  4. Step 4: Simplify right side
    2,120.42x = 2,333,336.99
  5. Step 5: Solve for x
    x = 2,333,336.99/2,120.42
  6. Step 6: Final answer
    x = 1,100.41

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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.