Home / 3,120.81-4,306.71-1,794.78

Finding the Fourth Proportional to 3,120.81, 4,306.71 and 1,794.78

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Solution

The fourth proportional to 3,120.81, 4,306.71 and 1,794.78 is: 2,476.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.81 : 4,306.71 = 1,794.78 : x
  2. Step 2: Convert to fraction form
    3,120.81/4,306.71 = 1,794.78/x
  3. Step 3: Cross multiply
    3,120.81x = 4,306.71 × 1,794.78
  4. Step 4: Simplify right side
    3,120.81x = 7,729,596.97
  5. Step 5: Solve for x
    x = 7,729,596.97/3,120.81
  6. Step 6: Final answer
    x = 2,476.79

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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.