Home / 3,218.57-4,827.90-1,270.75

Finding the Fourth Proportional to 3,218.57, 4,827.90 and 1,270.75

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Solution

The fourth proportional to 3,218.57, 4,827.90 and 1,270.75 is: 1,906.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.57 : 4,827.90 = 1,270.75 : x
  2. Step 2: Convert to fraction form
    3,218.57/4,827.90 = 1,270.75/x
  3. Step 3: Cross multiply
    3,218.57x = 4,827.90 × 1,270.75
  4. Step 4: Simplify right side
    3,218.57x = 6,135,053.93
  5. Step 5: Solve for x
    x = 6,135,053.93/3,218.57
  6. Step 6: Final answer
    x = 1,906.14

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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.