Home / 3,120.51-4,305.92-1,941.96

Finding the Fourth Proportional to 3,120.51, 4,305.92 and 1,941.96

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Solution

The fourth proportional to 3,120.51, 4,305.92 and 1,941.96 is: 2,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.51 : 4,305.92 = 1,941.96 : x
  2. Step 2: Convert to fraction form
    3,120.51/4,305.92 = 1,941.96/x
  3. Step 3: Cross multiply
    3,120.51x = 4,305.92 × 1,941.96
  4. Step 4: Simplify right side
    3,120.51x = 8,361,914.69
  5. Step 5: Solve for x
    x = 8,361,914.69/3,120.51
  6. Step 6: Final answer
    x = 2,679.66

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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.