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Finding the Fourth Proportional to 2,794.50, 3,856.41 and 1,615.65

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Solution

The fourth proportional to 2,794.50, 3,856.41 and 1,615.65 is: 2,229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.50 : 3,856.41 = 1,615.65 : x
  2. Step 2: Convert to fraction form
    2,794.50/3,856.41 = 1,615.65/x
  3. Step 3: Cross multiply
    2,794.50x = 3,856.41 × 1,615.65
  4. Step 4: Simplify right side
    2,794.50x = 6,230,594.35
  5. Step 5: Solve for x
    x = 6,230,594.35/2,794.50
  6. Step 6: Final answer
    x = 2,229.59

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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.