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Finding the Fourth Proportional to 2,794.63, 3,856.36 and 1,615.77

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Solution

The fourth proportional to 2,794.63, 3,856.36 and 1,615.77 is: 2,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.63 : 3,856.36 = 1,615.77 : x
  2. Step 2: Convert to fraction form
    2,794.63/3,856.36 = 1,615.77/x
  3. Step 3: Cross multiply
    2,794.63x = 3,856.36 × 1,615.77
  4. Step 4: Simplify right side
    2,794.63x = 6,230,990.80
  5. Step 5: Solve for x
    x = 6,230,990.80/2,794.63
  6. Step 6: Final answer
    x = 2,229.63

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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.