Home / 3,785.48-5,679.20-1,188.44

Finding the Fourth Proportional to 3,785.48, 5,679.20 and 1,188.44

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Solution

The fourth proportional to 3,785.48, 5,679.20 and 1,188.44 is: 1,782.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.48 : 5,679.20 = 1,188.44 : x
  2. Step 2: Convert to fraction form
    3,785.48/5,679.20 = 1,188.44/x
  3. Step 3: Cross multiply
    3,785.48x = 5,679.20 × 1,188.44
  4. Step 4: Simplify right side
    3,785.48x = 6,749,388.45
  5. Step 5: Solve for x
    x = 6,749,388.45/3,785.48
  6. Step 6: Final answer
    x = 1,782.97

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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.