Home / 3,831.04-5,286.48-2,152.48

Finding the Fourth Proportional to 3,831.04, 5,286.48 and 2,152.48

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Solution

The fourth proportional to 3,831.04, 5,286.48 and 2,152.48 is: 2,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.04 : 5,286.48 = 2,152.48 : x
  2. Step 2: Convert to fraction form
    3,831.04/5,286.48 = 2,152.48/x
  3. Step 3: Cross multiply
    3,831.04x = 5,286.48 × 2,152.48
  4. Step 4: Simplify right side
    3,831.04x = 11,379,042.47
  5. Step 5: Solve for x
    x = 11,379,042.47/3,831.04
  6. Step 6: Final answer
    x = 2,970.22

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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.