Home / 2,821.79-3,895.12-1,702.78

Finding the Fourth Proportional to 2,821.79, 3,895.12 and 1,702.78

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Solution

The fourth proportional to 2,821.79, 3,895.12 and 1,702.78 is: 2,350.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.79 : 3,895.12 = 1,702.78 : x
  2. Step 2: Convert to fraction form
    2,821.79/3,895.12 = 1,702.78/x
  3. Step 3: Cross multiply
    2,821.79x = 3,895.12 × 1,702.78
  4. Step 4: Simplify right side
    2,821.79x = 6,632,504.44
  5. Step 5: Solve for x
    x = 6,632,504.44/2,821.79
  6. Step 6: Final answer
    x = 2,350.46

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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.