Home / 3,238-4,858.76-1,290.20

Finding the Fourth Proportional to 3,238, 4,858.76 and 1,290.20

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Solution

The fourth proportional to 3,238, 4,858.76 and 1,290.20 is: 1,936.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238 : 4,858.76 = 1,290.20 : x
  2. Step 2: Convert to fraction form
    3,238/4,858.76 = 1,290.20/x
  3. Step 3: Cross multiply
    3,238x = 4,858.76 × 1,290.20
  4. Step 4: Simplify right side
    3,238x = 6,268,772.15
  5. Step 5: Solve for x
    x = 6,268,772.15/3,238
  6. Step 6: Final answer
    x = 1,936.00

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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.