Home / 4,218.18-6,328.92-1,620.54

Finding the Fourth Proportional to 4,218.18, 6,328.92 and 1,620.54

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Solution

The fourth proportional to 4,218.18, 6,328.92 and 1,620.54 is: 2,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.18 : 6,328.92 = 1,620.54 : x
  2. Step 2: Convert to fraction form
    4,218.18/6,328.92 = 1,620.54/x
  3. Step 3: Cross multiply
    4,218.18x = 6,328.92 × 1,620.54
  4. Step 4: Simplify right side
    4,218.18x = 10,256,268.02
  5. Step 5: Solve for x
    x = 10,256,268.02/4,218.18
  6. Step 6: Final answer
    x = 2,431.44

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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.