Home / 1,394.56-2,100.88-1,326.64

Finding the Fourth Proportional to 1,394.56, 2,100.88 and 1,326.64

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Solution

The fourth proportional to 1,394.56, 2,100.88 and 1,326.64 is: 1,998.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.56 : 2,100.88 = 1,326.64 : x
  2. Step 2: Convert to fraction form
    1,394.56/2,100.88 = 1,326.64/x
  3. Step 3: Cross multiply
    1,394.56x = 2,100.88 × 1,326.64
  4. Step 4: Simplify right side
    1,394.56x = 2,787,111.44
  5. Step 5: Solve for x
    x = 2,787,111.44/1,394.56
  6. Step 6: Final answer
    x = 1,998.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.