Home / 3,831.43-5,287.62-2,130.13

Finding the Fourth Proportional to 3,831.43, 5,287.62 and 2,130.13

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Solution

The fourth proportional to 3,831.43, 5,287.62 and 2,130.13 is: 2,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.43 : 5,287.62 = 2,130.13 : x
  2. Step 2: Convert to fraction form
    3,831.43/5,287.62 = 2,130.13/x
  3. Step 3: Cross multiply
    3,831.43x = 5,287.62 × 2,130.13
  4. Step 4: Simplify right side
    3,831.43x = 11,263,299.45
  5. Step 5: Solve for x
    x = 11,263,299.45/3,831.43
  6. Step 6: Final answer
    x = 2,939.71

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Similar ratio
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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.