Home / 2,815.44-3,881.16-2,290.56

Finding the Fourth Proportional to 2,815.44, 3,881.16 and 2,290.56

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Solution

The fourth proportional to 2,815.44, 3,881.16 and 2,290.56 is: 3,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.44 : 3,881.16 = 2,290.56 : x
  2. Step 2: Convert to fraction form
    2,815.44/3,881.16 = 2,290.56/x
  3. Step 3: Cross multiply
    2,815.44x = 3,881.16 × 2,290.56
  4. Step 4: Simplify right side
    2,815.44x = 8,890,029.85
  5. Step 5: Solve for x
    x = 8,890,029.85/2,815.44
  6. Step 6: Final answer
    x = 3,157.60

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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.