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Finding the Fourth Proportional to 2,090.51, 3,136.07 and 629.77

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Solution

The fourth proportional to 2,090.51, 3,136.07 and 629.77 is: 944.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.51 : 3,136.07 = 629.77 : x
  2. Step 2: Convert to fraction form
    2,090.51/3,136.07 = 629.77/x
  3. Step 3: Cross multiply
    2,090.51x = 3,136.07 × 629.77
  4. Step 4: Simplify right side
    2,090.51x = 1,975,002.80
  5. Step 5: Solve for x
    x = 1,975,002.80/2,090.51
  6. Step 6: Final answer
    x = 944.75

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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.