Home / 1,831.28-2,524.44-1,388.38

Finding the Fourth Proportional to 1,831.28, 2,524.44 and 1,388.38

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Solution

The fourth proportional to 1,831.28, 2,524.44 and 1,388.38 is: 1,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.28 : 2,524.44 = 1,388.38 : x
  2. Step 2: Convert to fraction form
    1,831.28/2,524.44 = 1,388.38/x
  3. Step 3: Cross multiply
    1,831.28x = 2,524.44 × 1,388.38
  4. Step 4: Simplify right side
    1,831.28x = 3,504,882.01
  5. Step 5: Solve for x
    x = 3,504,882.01/1,831.28
  6. Step 6: Final answer
    x = 1,913.90

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1.5x scale

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.