Home / 2,195.39-3,289.36-1,327.88

Finding the Fourth Proportional to 2,195.39, 3,289.36 and 1,327.88

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Solution

The fourth proportional to 2,195.39, 3,289.36 and 1,327.88 is: 1,989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.39 : 3,289.36 = 1,327.88 : x
  2. Step 2: Convert to fraction form
    2,195.39/3,289.36 = 1,327.88/x
  3. Step 3: Cross multiply
    2,195.39x = 3,289.36 × 1,327.88
  4. Step 4: Simplify right side
    2,195.39x = 4,367,875.36
  5. Step 5: Solve for x
    x = 4,367,875.36/2,195.39
  6. Step 6: Final answer
    x = 1,989.57

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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.