Home / 1,831.75-2,523.36-1,389.22

Finding the Fourth Proportional to 1,831.75, 2,523.36 and 1,389.22

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Solution

The fourth proportional to 1,831.75, 2,523.36 and 1,389.22 is: 1,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.75 : 2,523.36 = 1,389.22 : x
  2. Step 2: Convert to fraction form
    1,831.75/2,523.36 = 1,389.22/x
  3. Step 3: Cross multiply
    1,831.75x = 2,523.36 × 1,389.22
  4. Step 4: Simplify right side
    1,831.75x = 3,505,502.18
  5. Step 5: Solve for x
    x = 3,505,502.18/1,831.75
  6. Step 6: Final answer
    x = 1,913.74

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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.