Home / 3,450.78-4,759.52-2,190.74

Finding the Fourth Proportional to 3,450.78, 4,759.52 and 2,190.74

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Solution

The fourth proportional to 3,450.78, 4,759.52 and 2,190.74 is: 3,021.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.78 : 4,759.52 = 2,190.74 : x
  2. Step 2: Convert to fraction form
    3,450.78/4,759.52 = 2,190.74/x
  3. Step 3: Cross multiply
    3,450.78x = 4,759.52 × 2,190.74
  4. Step 4: Simplify right side
    3,450.78x = 10,426,836.09
  5. Step 5: Solve for x
    x = 10,426,836.09/3,450.78
  6. Step 6: Final answer
    x = 3,021.59

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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.