Home / 3,218.96-4,826.76-1,485.68

Finding the Fourth Proportional to 3,218.96, 4,826.76 and 1,485.68

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Solution

The fourth proportional to 3,218.96, 4,826.76 and 1,485.68 is: 2,227.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.96 : 4,826.76 = 1,485.68 : x
  2. Step 2: Convert to fraction form
    3,218.96/4,826.76 = 1,485.68/x
  3. Step 3: Cross multiply
    3,218.96x = 4,826.76 × 1,485.68
  4. Step 4: Simplify right side
    3,218.96x = 7,171,020.80
  5. Step 5: Solve for x
    x = 7,171,020.80/3,218.96
  6. Step 6: Final answer
    x = 2,227.74

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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.