Home / 3,789.30-5,231.63-2,792.85

Finding the Fourth Proportional to 3,789.30, 5,231.63 and 2,792.85

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Solution

The fourth proportional to 3,789.30, 5,231.63 and 2,792.85 is: 3,855.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.30 : 5,231.63 = 2,792.85 : x
  2. Step 2: Convert to fraction form
    3,789.30/5,231.63 = 2,792.85/x
  3. Step 3: Cross multiply
    3,789.30x = 5,231.63 × 2,792.85
  4. Step 4: Simplify right side
    3,789.30x = 14,611,138.67
  5. Step 5: Solve for x
    x = 14,611,138.67/3,789.30
  6. Step 6: Final answer
    x = 3,855.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.