Home / 2,120.01-3,180.29-1,079.66

Finding the Fourth Proportional to 2,120.01, 3,180.29 and 1,079.66

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Solution

The fourth proportional to 2,120.01, 3,180.29 and 1,079.66 is: 1,619.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.01 : 3,180.29 = 1,079.66 : x
  2. Step 2: Convert to fraction form
    2,120.01/3,180.29 = 1,079.66/x
  3. Step 3: Cross multiply
    2,120.01x = 3,180.29 × 1,079.66
  4. Step 4: Simplify right side
    2,120.01x = 3,433,610.60
  5. Step 5: Solve for x
    x = 3,433,610.60/2,120.01
  6. Step 6: Final answer
    x = 1,619.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.