Home / 2,180.40-3,007.31-1,394.03

Finding the Fourth Proportional to 2,180.40, 3,007.31 and 1,394.03

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Solution

The fourth proportional to 2,180.40, 3,007.31 and 1,394.03 is: 1,922.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.40 : 3,007.31 = 1,394.03 : x
  2. Step 2: Convert to fraction form
    2,180.40/3,007.31 = 1,394.03/x
  3. Step 3: Cross multiply
    2,180.40x = 3,007.31 × 1,394.03
  4. Step 4: Simplify right side
    2,180.40x = 4,192,258.35
  5. Step 5: Solve for x
    x = 4,192,258.35/2,180.40
  6. Step 6: Final answer
    x = 1,922.70

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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.