Home / 3,894.46-5,377.92-2,838.32

Finding the Fourth Proportional to 3,894.46, 5,377.92 and 2,838.32

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Solution

The fourth proportional to 3,894.46, 5,377.92 and 2,838.32 is: 3,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.46 : 5,377.92 = 2,838.32 : x
  2. Step 2: Convert to fraction form
    3,894.46/5,377.92 = 2,838.32/x
  3. Step 3: Cross multiply
    3,894.46x = 5,377.92 × 2,838.32
  4. Step 4: Simplify right side
    3,894.46x = 15,264,257.89
  5. Step 5: Solve for x
    x = 15,264,257.89/3,894.46
  6. Step 6: Final answer
    x = 3,919.48

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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.