Home / 3,161.37-4,739.11-1,405.45

Finding the Fourth Proportional to 3,161.37, 4,739.11 and 1,405.45

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Solution

The fourth proportional to 3,161.37, 4,739.11 and 1,405.45 is: 2,106.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.37 : 4,739.11 = 1,405.45 : x
  2. Step 2: Convert to fraction form
    3,161.37/4,739.11 = 1,405.45/x
  3. Step 3: Cross multiply
    3,161.37x = 4,739.11 × 1,405.45
  4. Step 4: Simplify right side
    3,161.37x = 6,660,551.43
  5. Step 5: Solve for x
    x = 6,660,551.43/3,161.37
  6. Step 6: Final answer
    x = 2,106.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.