Home / 2,195.64-3,027.92-1,311.36

Finding the Fourth Proportional to 2,195.64, 3,027.92 and 1,311.36

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Solution

The fourth proportional to 2,195.64, 3,027.92 and 1,311.36 is: 1,808.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.64 : 3,027.92 = 1,311.36 : x
  2. Step 2: Convert to fraction form
    2,195.64/3,027.92 = 1,311.36/x
  3. Step 3: Cross multiply
    2,195.64x = 3,027.92 × 1,311.36
  4. Step 4: Simplify right side
    2,195.64x = 3,970,693.17
  5. Step 5: Solve for x
    x = 3,970,693.17/2,195.64
  6. Step 6: Final answer
    x = 1,808.44

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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.