Home / 3,405.93-5,109.81-1,431.26

Finding the Fourth Proportional to 3,405.93, 5,109.81 and 1,431.26

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Solution

The fourth proportional to 3,405.93, 5,109.81 and 1,431.26 is: 2,147.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.93 : 5,109.81 = 1,431.26 : x
  2. Step 2: Convert to fraction form
    3,405.93/5,109.81 = 1,431.26/x
  3. Step 3: Cross multiply
    3,405.93x = 5,109.81 × 1,431.26
  4. Step 4: Simplify right side
    3,405.93x = 7,313,441.11
  5. Step 5: Solve for x
    x = 7,313,441.11/3,405.93
  6. Step 6: Final answer
    x = 2,147.27

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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.