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Finding the Fourth Proportional to 2,090.82, 3,135.96 and 792.12

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Solution

The fourth proportional to 2,090.82, 3,135.96 and 792.12 is: 1,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.82 : 3,135.96 = 792.12 : x
  2. Step 2: Convert to fraction form
    2,090.82/3,135.96 = 792.12/x
  3. Step 3: Cross multiply
    2,090.82x = 3,135.96 × 792.12
  4. Step 4: Simplify right side
    2,090.82x = 2,484,056.64
  5. Step 5: Solve for x
    x = 2,484,056.64/2,090.82
  6. Step 6: Final answer
    x = 1,188.08

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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.