Home / 2,052.88-2,831.96-1,389.92

Finding the Fourth Proportional to 2,052.88, 2,831.96 and 1,389.92

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Solution

The fourth proportional to 2,052.88, 2,831.96 and 1,389.92 is: 1,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.88 : 2,831.96 = 1,389.92 : x
  2. Step 2: Convert to fraction form
    2,052.88/2,831.96 = 1,389.92/x
  3. Step 3: Cross multiply
    2,052.88x = 2,831.96 × 1,389.92
  4. Step 4: Simplify right side
    2,052.88x = 3,936,197.84
  5. Step 5: Solve for x
    x = 3,936,197.84/2,052.88
  6. Step 6: Final answer
    x = 1,917.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.