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Finding the Fourth Proportional to 2,794.80, 3,856.37 and 1,615.64

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Solution

The fourth proportional to 2,794.80, 3,856.37 and 1,615.64 is: 2,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,794.80 : 3,856.37 = 1,615.64 : x
  2. Step 2: Convert to fraction form
    2,794.80/3,856.37 = 1,615.64/x
  3. Step 3: Cross multiply
    2,794.80x = 3,856.37 × 1,615.64
  4. Step 4: Simplify right side
    2,794.80x = 6,230,504.50
  5. Step 5: Solve for x
    x = 6,230,504.50/2,794.80
  6. Step 6: Final answer
    x = 2,229.32

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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.