Home / 2,090.20-3,127.20-1,361.20

Finding the Fourth Proportional to 2,090.20, 3,127.20 and 1,361.20

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Solution

The fourth proportional to 2,090.20, 3,127.20 and 1,361.20 is: 2,036.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.20 : 3,127.20 = 1,361.20 : x
  2. Step 2: Convert to fraction form
    2,090.20/3,127.20 = 1,361.20/x
  3. Step 3: Cross multiply
    2,090.20x = 3,127.20 × 1,361.20
  4. Step 4: Simplify right side
    2,090.20x = 4,256,744.64
  5. Step 5: Solve for x
    x = 4,256,744.64/2,090.20
  6. Step 6: Final answer
    x = 2,036.53

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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.