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Finding the Fourth Proportional to 4,131, 5,700.78 and 2,268

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Solution

The fourth proportional to 4,131, 5,700.78 and 2,268 is: 3,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,131 : 5,700.78 = 2,268 : x
  2. Step 2: Convert to fraction form
    4,131/5,700.78 = 2,268/x
  3. Step 3: Cross multiply
    4,131x = 5,700.78 × 2,268
  4. Step 4: Simplify right side
    4,131x = 12,929,369.04
  5. Step 5: Solve for x
    x = 12,929,369.04/4,131
  6. Step 6: Final answer
    x = 3,129.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.