Home / 3,840.52-5,760.96-2,105.68

Finding the Fourth Proportional to 3,840.52, 5,760.96 and 2,105.68

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Solution

The fourth proportional to 3,840.52, 5,760.96 and 2,105.68 is: 3,158.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.52 : 5,760.96 = 2,105.68 : x
  2. Step 2: Convert to fraction form
    3,840.52/5,760.96 = 2,105.68/x
  3. Step 3: Cross multiply
    3,840.52x = 5,760.96 × 2,105.68
  4. Step 4: Simplify right side
    3,840.52x = 12,130,738.25
  5. Step 5: Solve for x
    x = 12,130,738.25/3,840.52
  6. Step 6: Final answer
    x = 3,158.62

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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.