Home / 3,128.96-4,308.77-2,797.26

Finding the Fourth Proportional to 3,128.96, 4,308.77 and 2,797.26

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Solution

The fourth proportional to 3,128.96, 4,308.77 and 2,797.26 is: 3,852.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.96 : 4,308.77 = 2,797.26 : x
  2. Step 2: Convert to fraction form
    3,128.96/4,308.77 = 2,797.26/x
  3. Step 3: Cross multiply
    3,128.96x = 4,308.77 × 2,797.26
  4. Step 4: Simplify right side
    3,128.96x = 12,052,749.97
  5. Step 5: Solve for x
    x = 12,052,749.97/3,128.96
  6. Step 6: Final answer
    x = 3,852.00

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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.