Home / 3,128.78-4,316.66-2,067.06

Finding the Fourth Proportional to 3,128.78, 4,316.66 and 2,067.06

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Solution

The fourth proportional to 3,128.78, 4,316.66 and 2,067.06 is: 2,851.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.78 : 4,316.66 = 2,067.06 : x
  2. Step 2: Convert to fraction form
    3,128.78/4,316.66 = 2,067.06/x
  3. Step 3: Cross multiply
    3,128.78x = 4,316.66 × 2,067.06
  4. Step 4: Simplify right side
    3,128.78x = 8,922,795.22
  5. Step 5: Solve for x
    x = 8,922,795.22/3,128.78
  6. Step 6: Final answer
    x = 2,851.84

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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.