Home / 2,556.39-3,831.33-1,400.79

Finding the Fourth Proportional to 2,556.39, 3,831.33 and 1,400.79

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Solution

The fourth proportional to 2,556.39, 3,831.33 and 1,400.79 is: 2,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.39 : 3,831.33 = 1,400.79 : x
  2. Step 2: Convert to fraction form
    2,556.39/3,831.33 = 1,400.79/x
  3. Step 3: Cross multiply
    2,556.39x = 3,831.33 × 1,400.79
  4. Step 4: Simplify right side
    2,556.39x = 5,366,888.75
  5. Step 5: Solve for x
    x = 5,366,888.75/2,556.39
  6. Step 6: Final answer
    x = 2,099.40

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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.