Home / 3,121.07-4,293.61-2,698.25

Finding the Fourth Proportional to 3,121.07, 4,293.61 and 2,698.25

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Solution

The fourth proportional to 3,121.07, 4,293.61 and 2,698.25 is: 3,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.07 : 4,293.61 = 2,698.25 : x
  2. Step 2: Convert to fraction form
    3,121.07/4,293.61 = 2,698.25/x
  3. Step 3: Cross multiply
    3,121.07x = 4,293.61 × 2,698.25
  4. Step 4: Simplify right side
    3,121.07x = 11,585,204.97
  5. Step 5: Solve for x
    x = 11,585,204.97/3,121.07
  6. Step 6: Final answer
    x = 3,711.94

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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.