Home / 3,813.18-5,719.77-1,620.38

Finding the Fourth Proportional to 3,813.18, 5,719.77 and 1,620.38

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Solution

The fourth proportional to 3,813.18, 5,719.77 and 1,620.38 is: 2,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,813.18 : 5,719.77 = 1,620.38 : x
  2. Step 2: Convert to fraction form
    3,813.18/5,719.77 = 1,620.38/x
  3. Step 3: Cross multiply
    3,813.18x = 5,719.77 × 1,620.38
  4. Step 4: Simplify right side
    3,813.18x = 9,268,172.31
  5. Step 5: Solve for x
    x = 9,268,172.31/3,813.18
  6. Step 6: Final answer
    x = 2,430.56

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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.