Home / 2,090.16-3,135.78-629.40

Finding the Fourth Proportional to 2,090.16, 3,135.78 and 629.40

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Solution

The fourth proportional to 2,090.16, 3,135.78 and 629.40 is: 944.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.16 : 3,135.78 = 629.40 : x
  2. Step 2: Convert to fraction form
    2,090.16/3,135.78 = 629.40/x
  3. Step 3: Cross multiply
    2,090.16x = 3,135.78 × 629.40
  4. Step 4: Simplify right side
    2,090.16x = 1,973,659.93
  5. Step 5: Solve for x
    x = 1,973,659.93/2,090.16
  6. Step 6: Final answer
    x = 944.26

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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.