Home / 3,919.78-5,409.07-2,328.23

Finding the Fourth Proportional to 3,919.78, 5,409.07 and 2,328.23

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Solution

The fourth proportional to 3,919.78, 5,409.07 and 2,328.23 is: 3,212.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.78 : 5,409.07 = 2,328.23 : x
  2. Step 2: Convert to fraction form
    3,919.78/5,409.07 = 2,328.23/x
  3. Step 3: Cross multiply
    3,919.78x = 5,409.07 × 2,328.23
  4. Step 4: Simplify right side
    3,919.78x = 12,593,559.05
  5. Step 5: Solve for x
    x = 12,593,559.05/3,919.78
  6. Step 6: Final answer
    x = 3,212.82

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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.