Home / 3,121.57-4,308.26-1,794.99

Finding the Fourth Proportional to 3,121.57, 4,308.26 and 1,794.99

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Solution

The fourth proportional to 3,121.57, 4,308.26 and 1,794.99 is: 2,477.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.57 : 4,308.26 = 1,794.99 : x
  2. Step 2: Convert to fraction form
    3,121.57/4,308.26 = 1,794.99/x
  3. Step 3: Cross multiply
    3,121.57x = 4,308.26 × 1,794.99
  4. Step 4: Simplify right side
    3,121.57x = 7,733,290.80
  5. Step 5: Solve for x
    x = 7,733,290.80/3,121.57
  6. Step 6: Final answer
    x = 2,477.37

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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.