Home / 2,963.79-4,087.41-2,021.12

Finding the Fourth Proportional to 2,963.79, 4,087.41 and 2,021.12

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Solution

The fourth proportional to 2,963.79, 4,087.41 and 2,021.12 is: 2,787.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.79 : 4,087.41 = 2,021.12 : x
  2. Step 2: Convert to fraction form
    2,963.79/4,087.41 = 2,021.12/x
  3. Step 3: Cross multiply
    2,963.79x = 4,087.41 × 2,021.12
  4. Step 4: Simplify right side
    2,963.79x = 8,261,125.66
  5. Step 5: Solve for x
    x = 8,261,125.66/2,963.79
  6. Step 6: Final answer
    x = 2,787.35

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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.