Home / 3,911.58-5,397.93-2,143.22

Finding the Fourth Proportional to 3,911.58, 5,397.93 and 2,143.22

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Solution

The fourth proportional to 3,911.58, 5,397.93 and 2,143.22 is: 2,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.58 : 5,397.93 = 2,143.22 : x
  2. Step 2: Convert to fraction form
    3,911.58/5,397.93 = 2,143.22/x
  3. Step 3: Cross multiply
    3,911.58x = 5,397.93 × 2,143.22
  4. Step 4: Simplify right side
    3,911.58x = 11,568,924.54
  5. Step 5: Solve for x
    x = 11,568,924.54/3,911.58
  6. Step 6: Final answer
    x = 2,957.61

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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.