Home / 3,395.36-5,090.31-3,121.99

Finding the Fourth Proportional to 3,395.36, 5,090.31 and 3,121.99

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Solution

The fourth proportional to 3,395.36, 5,090.31 and 3,121.99 is: 4,680.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.36 : 5,090.31 = 3,121.99 : x
  2. Step 2: Convert to fraction form
    3,395.36/5,090.31 = 3,121.99/x
  3. Step 3: Cross multiply
    3,395.36x = 5,090.31 × 3,121.99
  4. Step 4: Simplify right side
    3,395.36x = 15,891,884.19
  5. Step 5: Solve for x
    x = 15,891,884.19/3,395.36
  6. Step 6: Final answer
    x = 4,680.47

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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.