Home / 3,218.56-4,827.58-1,270.78

Finding the Fourth Proportional to 3,218.56, 4,827.58 and 1,270.78

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Solution

The fourth proportional to 3,218.56, 4,827.58 and 1,270.78 is: 1,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,218.56 : 4,827.58 = 1,270.78 : x
  2. Step 2: Convert to fraction form
    3,218.56/4,827.58 = 1,270.78/x
  3. Step 3: Cross multiply
    3,218.56x = 4,827.58 × 1,270.78
  4. Step 4: Simplify right side
    3,218.56x = 6,134,792.11
  5. Step 5: Solve for x
    x = 6,134,792.11/3,218.56
  6. Step 6: Final answer
    x = 1,906.07

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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.