Home / 2,090.13-3,135.19-629.28

Finding the Fourth Proportional to 2,090.13, 3,135.19 and 629.28

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Solution

The fourth proportional to 2,090.13, 3,135.19 and 629.28 is: 943.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.13 : 3,135.19 = 629.28 : x
  2. Step 2: Convert to fraction form
    2,090.13/3,135.19 = 629.28/x
  3. Step 3: Cross multiply
    2,090.13x = 3,135.19 × 629.28
  4. Step 4: Simplify right side
    2,090.13x = 1,972,912.36
  5. Step 5: Solve for x
    x = 1,972,912.36/2,090.13
  6. Step 6: Final answer
    x = 943.92

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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.