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Finding the Fourth Proportional to 3,789.07, 5,228.57 and 2,794.89

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Solution

The fourth proportional to 3,789.07, 5,228.57 and 2,794.89 is: 3,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.07 : 5,228.57 = 2,794.89 : x
  2. Step 2: Convert to fraction form
    3,789.07/5,228.57 = 2,794.89/x
  3. Step 3: Cross multiply
    3,789.07x = 5,228.57 × 2,794.89
  4. Step 4: Simplify right side
    3,789.07x = 14,613,288.88
  5. Step 5: Solve for x
    x = 14,613,288.88/3,789.07
  6. Step 6: Final answer
    x = 3,856.70

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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.