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Finding the Fourth Proportional to 2,090.73, 3,136.40 and 629.99

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Solution

The fourth proportional to 2,090.73, 3,136.40 and 629.99 is: 945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.73 : 3,136.40 = 629.99 : x
  2. Step 2: Convert to fraction form
    2,090.73/3,136.40 = 629.99/x
  3. Step 3: Cross multiply
    2,090.73x = 3,136.40 × 629.99
  4. Step 4: Simplify right side
    2,090.73x = 1,975,905.33
  5. Step 5: Solve for x
    x = 1,975,905.33/2,090.73
  6. Step 6: Final answer
    x = 945.08

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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.