Home / 3,846.12-5,768.55-1,380.48

Finding the Fourth Proportional to 3,846.12, 5,768.55 and 1,380.48

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Solution

The fourth proportional to 3,846.12, 5,768.55 and 1,380.48 is: 2,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.12 : 5,768.55 = 1,380.48 : x
  2. Step 2: Convert to fraction form
    3,846.12/5,768.55 = 1,380.48/x
  3. Step 3: Cross multiply
    3,846.12x = 5,768.55 × 1,380.48
  4. Step 4: Simplify right side
    3,846.12x = 7,963,367.90
  5. Step 5: Solve for x
    x = 7,963,367.90/3,846.12
  6. Step 6: Final answer
    x = 2,070.49

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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.