Home / 3,110.34-4,286.31-1,989.33

Finding the Fourth Proportional to 3,110.34, 4,286.31 and 1,989.33

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Solution

The fourth proportional to 3,110.34, 4,286.31 and 1,989.33 is: 2,741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.34 : 4,286.31 = 1,989.33 : x
  2. Step 2: Convert to fraction form
    3,110.34/4,286.31 = 1,989.33/x
  3. Step 3: Cross multiply
    3,110.34x = 4,286.31 × 1,989.33
  4. Step 4: Simplify right side
    3,110.34x = 8,526,874.36
  5. Step 5: Solve for x
    x = 8,526,874.36/3,110.34
  6. Step 6: Final answer
    x = 2,741.46

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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.