Home / 2,639.49-3,958.07-1,406.64

Finding the Fourth Proportional to 2,639.49, 3,958.07 and 1,406.64

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Solution

The fourth proportional to 2,639.49, 3,958.07 and 1,406.64 is: 2,109.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.49 : 3,958.07 = 1,406.64 : x
  2. Step 2: Convert to fraction form
    2,639.49/3,958.07 = 1,406.64/x
  3. Step 3: Cross multiply
    2,639.49x = 3,958.07 × 1,406.64
  4. Step 4: Simplify right side
    2,639.49x = 5,567,556.28
  5. Step 5: Solve for x
    x = 5,567,556.28/2,639.49
  6. Step 6: Final answer
    x = 2,109.33

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1.5x scale

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.