Home / 3,128.58-4,313.10-2,183.04

Finding the Fourth Proportional to 3,128.58, 4,313.10 and 2,183.04

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Solution

The fourth proportional to 3,128.58, 4,313.10 and 2,183.04 is: 3,009.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.58 : 4,313.10 = 2,183.04 : x
  2. Step 2: Convert to fraction form
    3,128.58/4,313.10 = 2,183.04/x
  3. Step 3: Cross multiply
    3,128.58x = 4,313.10 × 2,183.04
  4. Step 4: Simplify right side
    3,128.58x = 9,415,669.82
  5. Step 5: Solve for x
    x = 9,415,669.82/3,128.58
  6. Step 6: Final answer
    x = 3,009.57

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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.