Home / 7,831.38-11,738.82-3,154.71

Finding the Fourth Proportional to 7,831.38, 11,738.82 and 3,154.71

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Solution

The fourth proportional to 7,831.38, 11,738.82 and 3,154.71 is: 4,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.38 : 11,738.82 = 3,154.71 : x
  2. Step 2: Convert to fraction form
    7,831.38/11,738.82 = 3,154.71/x
  3. Step 3: Cross multiply
    7,831.38x = 11,738.82 × 3,154.71
  4. Step 4: Simplify right side
    7,831.38x = 37,032,572.84
  5. Step 5: Solve for x
    x = 37,032,572.84/7,831.38
  6. Step 6: Final answer
    x = 4,728.74

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1.5x scale

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.