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Finding the Fourth Proportional to 2,751.38, 3,796.90 and 1,509.38

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Solution

The fourth proportional to 2,751.38, 3,796.90 and 1,509.38 is: 2,082.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.38 : 3,796.90 = 1,509.38 : x
  2. Step 2: Convert to fraction form
    2,751.38/3,796.90 = 1,509.38/x
  3. Step 3: Cross multiply
    2,751.38x = 3,796.90 × 1,509.38
  4. Step 4: Simplify right side
    2,751.38x = 5,730,942.16
  5. Step 5: Solve for x
    x = 5,730,942.16/2,751.38
  6. Step 6: Final answer
    x = 2,082.94

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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.