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Finding the Fourth Proportional to 3,789.07, 5,228.56 and 2,794.90

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Solution

The fourth proportional to 3,789.07, 5,228.56 and 2,794.90 is: 3,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.07 : 5,228.56 = 2,794.90 : x
  2. Step 2: Convert to fraction form
    3,789.07/5,228.56 = 2,794.90/x
  3. Step 3: Cross multiply
    3,789.07x = 5,228.56 × 2,794.90
  4. Step 4: Simplify right side
    3,789.07x = 14,613,302.34
  5. Step 5: Solve for x
    x = 14,613,302.34/3,789.07
  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.