Home / 3,161.88-4,742.52-1,311.84

Finding the Fourth Proportional to 3,161.88, 4,742.52 and 1,311.84

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Solution

The fourth proportional to 3,161.88, 4,742.52 and 1,311.84 is: 1,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.88 : 4,742.52 = 1,311.84 : x
  2. Step 2: Convert to fraction form
    3,161.88/4,742.52 = 1,311.84/x
  3. Step 3: Cross multiply
    3,161.88x = 4,742.52 × 1,311.84
  4. Step 4: Simplify right side
    3,161.88x = 6,221,427.44
  5. Step 5: Solve for x
    x = 6,221,427.44/3,161.88
  6. Step 6: Final answer
    x = 1,967.64

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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.