Home / 3,128.58-4,313.52-2,007.54

Finding the Fourth Proportional to 3,128.58, 4,313.52 and 2,007.54

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Solution

The fourth proportional to 3,128.58, 4,313.52 and 2,007.54 is: 2,767.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.58 : 4,313.52 = 2,007.54 : x
  2. Step 2: Convert to fraction form
    3,128.58/4,313.52 = 2,007.54/x
  3. Step 3: Cross multiply
    3,128.58x = 4,313.52 × 2,007.54
  4. Step 4: Simplify right side
    3,128.58x = 8,659,563.94
  5. Step 5: Solve for x
    x = 8,659,563.94/3,128.58
  6. Step 6: Final answer
    x = 2,767.89

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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.