Home / 1,890.22-2,831.73-1,431.02

Finding the Fourth Proportional to 1,890.22, 2,831.73 and 1,431.02

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Solution

The fourth proportional to 1,890.22, 2,831.73 and 1,431.02 is: 2,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.22 : 2,831.73 = 1,431.02 : x
  2. Step 2: Convert to fraction form
    1,890.22/2,831.73 = 1,431.02/x
  3. Step 3: Cross multiply
    1,890.22x = 2,831.73 × 1,431.02
  4. Step 4: Simplify right side
    1,890.22x = 4,052,262.26
  5. Step 5: Solve for x
    x = 4,052,262.26/1,890.22
  6. Step 6: Final answer
    x = 2,143.80

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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.