Home / 3,161.24-4,360.68-1,980.26

Finding the Fourth Proportional to 3,161.24, 4,360.68 and 1,980.26

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Solution

The fourth proportional to 3,161.24, 4,360.68 and 1,980.26 is: 2,731.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.24 : 4,360.68 = 1,980.26 : x
  2. Step 2: Convert to fraction form
    3,161.24/4,360.68 = 1,980.26/x
  3. Step 3: Cross multiply
    3,161.24x = 4,360.68 × 1,980.26
  4. Step 4: Simplify right side
    3,161.24x = 8,635,258.37
  5. Step 5: Solve for x
    x = 8,635,258.37/3,161.24
  6. Step 6: Final answer
    x = 2,731.61

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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.