Home / 3,121.52-4,327.42-2,955.06

Finding the Fourth Proportional to 3,121.52, 4,327.42 and 2,955.06

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Solution

The fourth proportional to 3,121.52, 4,327.42 and 2,955.06 is: 4,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.52 : 4,327.42 = 2,955.06 : x
  2. Step 2: Convert to fraction form
    3,121.52/4,327.42 = 2,955.06/x
  3. Step 3: Cross multiply
    3,121.52x = 4,327.42 × 2,955.06
  4. Step 4: Simplify right side
    3,121.52x = 12,787,785.75
  5. Step 5: Solve for x
    x = 12,787,785.75/3,121.52
  6. Step 6: Final answer
    x = 4,096.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.