Home / 3,831.34-5,287.38-2,152.71

Finding the Fourth Proportional to 3,831.34, 5,287.38 and 2,152.71

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Solution

The fourth proportional to 3,831.34, 5,287.38 and 2,152.71 is: 2,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.34 : 5,287.38 = 2,152.71 : x
  2. Step 2: Convert to fraction form
    3,831.34/5,287.38 = 2,152.71/x
  3. Step 3: Cross multiply
    3,831.34x = 5,287.38 × 2,152.71
  4. Step 4: Simplify right side
    3,831.34x = 11,382,199.84
  5. Step 5: Solve for x
    x = 11,382,199.84/3,831.34
  6. Step 6: Final answer
    x = 2,970.81

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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.