Home / 2,975.36-4,111.92-2,231.84

Finding the Fourth Proportional to 2,975.36, 4,111.92 and 2,231.84

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Solution

The fourth proportional to 2,975.36, 4,111.92 and 2,231.84 is: 3,084.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.36 : 4,111.92 = 2,231.84 : x
  2. Step 2: Convert to fraction form
    2,975.36/4,111.92 = 2,231.84/x
  3. Step 3: Cross multiply
    2,975.36x = 4,111.92 × 2,231.84
  4. Step 4: Simplify right side
    2,975.36x = 9,177,147.53
  5. Step 5: Solve for x
    x = 9,177,147.53/2,975.36
  6. Step 6: Final answer
    x = 3,084.38

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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.