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Finding the Fourth Proportional to 2,090.88, 3,135.11 and 792.45

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Solution

The fourth proportional to 2,090.88, 3,135.11 and 792.45 is: 1,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.88 : 3,135.11 = 792.45 : x
  2. Step 2: Convert to fraction form
    2,090.88/3,135.11 = 792.45/x
  3. Step 3: Cross multiply
    2,090.88x = 3,135.11 × 792.45
  4. Step 4: Simplify right side
    2,090.88x = 2,484,413.96
  5. Step 5: Solve for x
    x = 2,484,413.96/2,090.88
  6. Step 6: Final answer
    x = 1,188.21

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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.