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Finding the Fourth Proportional to 2,797.85, 3,861.05 and 1,602.86

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Solution

The fourth proportional to 2,797.85, 3,861.05 and 1,602.86 is: 2,211.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,797.85 : 3,861.05 = 1,602.86 : x
  2. Step 2: Convert to fraction form
    2,797.85/3,861.05 = 1,602.86/x
  3. Step 3: Cross multiply
    2,797.85x = 3,861.05 × 1,602.86
  4. Step 4: Simplify right side
    2,797.85x = 6,188,695.28
  5. Step 5: Solve for x
    x = 6,188,695.28/2,797.85
  6. Step 6: Final answer
    x = 2,211.95

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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.