Home / 2,821.42-3,893.40-1,562.43

Finding the Fourth Proportional to 2,821.42, 3,893.40 and 1,562.43

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Solution

The fourth proportional to 2,821.42, 3,893.40 and 1,562.43 is: 2,156.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.42 : 3,893.40 = 1,562.43 : x
  2. Step 2: Convert to fraction form
    2,821.42/3,893.40 = 1,562.43/x
  3. Step 3: Cross multiply
    2,821.42x = 3,893.40 × 1,562.43
  4. Step 4: Simplify right side
    2,821.42x = 6,083,164.96
  5. Step 5: Solve for x
    x = 6,083,164.96/2,821.42
  6. Step 6: Final answer
    x = 2,156.07

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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.