Home / 3,831.42-5,287.16-2,152.89

Finding the Fourth Proportional to 3,831.42, 5,287.16 and 2,152.89

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Solution

The fourth proportional to 3,831.42, 5,287.16 and 2,152.89 is: 2,970.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.42 : 5,287.16 = 2,152.89 : x
  2. Step 2: Convert to fraction form
    3,831.42/5,287.16 = 2,152.89/x
  3. Step 3: Cross multiply
    3,831.42x = 5,287.16 × 2,152.89
  4. Step 4: Simplify right side
    3,831.42x = 11,382,663.13
  5. Step 5: Solve for x
    x = 11,382,663.13/3,831.42
  6. Step 6: Final answer
    x = 2,970.87

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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.