Home / 1,815.14-2,503.31-1,394.75

Finding the Fourth Proportional to 1,815.14, 2,503.31 and 1,394.75

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Solution

The fourth proportional to 1,815.14, 2,503.31 and 1,394.75 is: 1,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.14 : 2,503.31 = 1,394.75 : x
  2. Step 2: Convert to fraction form
    1,815.14/2,503.31 = 1,394.75/x
  3. Step 3: Cross multiply
    1,815.14x = 2,503.31 × 1,394.75
  4. Step 4: Simplify right side
    1,815.14x = 3,491,490.91
  5. Step 5: Solve for x
    x = 3,491,490.91/1,815.14
  6. Step 6: Final answer
    x = 1,923.54

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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.