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Finding the Fourth Proportional to 2,090.44, 3,136.20 and 791.92

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Solution

The fourth proportional to 2,090.44, 3,136.20 and 791.92 is: 1,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.44 : 3,136.20 = 791.92 : x
  2. Step 2: Convert to fraction form
    2,090.44/3,136.20 = 791.92/x
  3. Step 3: Cross multiply
    2,090.44x = 3,136.20 × 791.92
  4. Step 4: Simplify right side
    2,090.44x = 2,483,619.50
  5. Step 5: Solve for x
    x = 2,483,619.50/2,090.44
  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.