Home / 3,831.56-5,287.40-2,152.96

Finding the Fourth Proportional to 3,831.56, 5,287.40 and 2,152.96

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Solution

The fourth proportional to 3,831.56, 5,287.40 and 2,152.96 is: 2,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.56 : 5,287.40 = 2,152.96 : x
  2. Step 2: Convert to fraction form
    3,831.56/5,287.40 = 2,152.96/x
  3. Step 3: Cross multiply
    3,831.56x = 5,287.40 × 2,152.96
  4. Step 4: Simplify right side
    3,831.56x = 11,383,560.70
  5. Step 5: Solve for x
    x = 11,383,560.70/3,831.56
  6. Step 6: Final answer
    x = 2,971.00

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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.