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Finding the Fourth Proportional to 4,969.37, 6,857.71 and 2,731.38

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Solution

The fourth proportional to 4,969.37, 6,857.71 and 2,731.38 is: 3,769.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.37 : 6,857.71 = 2,731.38 : x
  2. Step 2: Convert to fraction form
    4,969.37/6,857.71 = 2,731.38/x
  3. Step 3: Cross multiply
    4,969.37x = 6,857.71 × 2,731.38
  4. Step 4: Simplify right side
    4,969.37x = 18,731,011.94
  5. Step 5: Solve for x
    x = 18,731,011.94/4,969.37
  6. Step 6: Final answer
    x = 3,769.29

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1.5x scale

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.