Home / 3,835.80-5,754.60-1,238.76

Finding the Fourth Proportional to 3,835.80, 5,754.60 and 1,238.76

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Solution

The fourth proportional to 3,835.80, 5,754.60 and 1,238.76 is: 1,858.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,835.80 : 5,754.60 = 1,238.76 : x
  2. Step 2: Convert to fraction form
    3,835.80/5,754.60 = 1,238.76/x
  3. Step 3: Cross multiply
    3,835.80x = 5,754.60 × 1,238.76
  4. Step 4: Simplify right side
    3,835.80x = 7,128,568.30
  5. Step 5: Solve for x
    x = 7,128,568.30/3,835.80
  6. Step 6: Final answer
    x = 1,858.43

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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.