Home / 3,128.93-4,321.16-2,707.26

Finding the Fourth Proportional to 3,128.93, 4,321.16 and 2,707.26

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Solution

The fourth proportional to 3,128.93, 4,321.16 and 2,707.26 is: 3,738.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.93 : 4,321.16 = 2,707.26 : x
  2. Step 2: Convert to fraction form
    3,128.93/4,321.16 = 2,707.26/x
  3. Step 3: Cross multiply
    3,128.93x = 4,321.16 × 2,707.26
  4. Step 4: Simplify right side
    3,128.93x = 11,698,490.09
  5. Step 5: Solve for x
    x = 11,698,490.09/3,128.93
  6. Step 6: Final answer
    x = 3,738.81

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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.