Home / 2,765.88-3,815.82-1,926.36

Finding the Fourth Proportional to 2,765.88, 3,815.82 and 1,926.36

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Solution

The fourth proportional to 2,765.88, 3,815.82 and 1,926.36 is: 2,657.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.88 : 3,815.82 = 1,926.36 : x
  2. Step 2: Convert to fraction form
    2,765.88/3,815.82 = 1,926.36/x
  3. Step 3: Cross multiply
    2,765.88x = 3,815.82 × 1,926.36
  4. Step 4: Simplify right side
    2,765.88x = 7,350,643.02
  5. Step 5: Solve for x
    x = 7,350,643.02/2,765.88
  6. Step 6: Final answer
    x = 2,657.61

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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.