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Finding the Fourth Proportional to 2,721.93, 4,083.38 and 942.90

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Solution

The fourth proportional to 2,721.93, 4,083.38 and 942.90 is: 1,414.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.93 : 4,083.38 = 942.90 : x
  2. Step 2: Convert to fraction form
    2,721.93/4,083.38 = 942.90/x
  3. Step 3: Cross multiply
    2,721.93x = 4,083.38 × 942.90
  4. Step 4: Simplify right side
    2,721.93x = 3,850,219.00
  5. Step 5: Solve for x
    x = 3,850,219.00/2,721.93
  6. Step 6: Final answer
    x = 1,414.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.