Home / 2,486.73-3,431.31-1,491.78

Finding the Fourth Proportional to 2,486.73, 3,431.31 and 1,491.78

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Solution

The fourth proportional to 2,486.73, 3,431.31 and 1,491.78 is: 2,058.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.73 : 3,431.31 = 1,491.78 : x
  2. Step 2: Convert to fraction form
    2,486.73/3,431.31 = 1,491.78/x
  3. Step 3: Cross multiply
    2,486.73x = 3,431.31 × 1,491.78
  4. Step 4: Simplify right side
    2,486.73x = 5,118,759.63
  5. Step 5: Solve for x
    x = 5,118,759.63/2,486.73
  6. Step 6: Final answer
    x = 2,058.43

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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.