Home / 3,205.79-4,422.94-1,878.56

Finding the Fourth Proportional to 3,205.79, 4,422.94 and 1,878.56

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Solution

The fourth proportional to 3,205.79, 4,422.94 and 1,878.56 is: 2,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.79 : 4,422.94 = 1,878.56 : x
  2. Step 2: Convert to fraction form
    3,205.79/4,422.94 = 1,878.56/x
  3. Step 3: Cross multiply
    3,205.79x = 4,422.94 × 1,878.56
  4. Step 4: Simplify right side
    3,205.79x = 8,308,747.94
  5. Step 5: Solve for x
    x = 8,308,747.94/3,205.79
  6. Step 6: Final answer
    x = 2,591.80

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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.