Home / 2,739.22-3,780.61-1,620.77

Finding the Fourth Proportional to 2,739.22, 3,780.61 and 1,620.77

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Solution

The fourth proportional to 2,739.22, 3,780.61 and 1,620.77 is: 2,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.22 : 3,780.61 = 1,620.77 : x
  2. Step 2: Convert to fraction form
    2,739.22/3,780.61 = 1,620.77/x
  3. Step 3: Cross multiply
    2,739.22x = 3,780.61 × 1,620.77
  4. Step 4: Simplify right side
    2,739.22x = 6,127,499.48
  5. Step 5: Solve for x
    x = 6,127,499.48/2,739.22
  6. Step 6: Final answer
    x = 2,236.95

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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.