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Finding the Fourth Proportional to 3,798.87, 5,694.52 and 1,820.85

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Solution

The fourth proportional to 3,798.87, 5,694.52 and 1,820.85 is: 2,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.87 : 5,694.52 = 1,820.85 : x
  2. Step 2: Convert to fraction form
    3,798.87/5,694.52 = 1,820.85/x
  3. Step 3: Cross multiply
    3,798.87x = 5,694.52 × 1,820.85
  4. Step 4: Simplify right side
    3,798.87x = 10,368,866.74
  5. Step 5: Solve for x
    x = 10,368,866.74/3,798.87
  6. Step 6: Final answer
    x = 2,729.46

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1.5x scale

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.