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Finding the Fourth Proportional to 2,663.45, 3,995.17 and 2,659.60

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Solution

The fourth proportional to 2,663.45, 3,995.17 and 2,659.60 is: 3,989.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,663.45 : 3,995.17 = 2,659.60 : x
  2. Step 2: Convert to fraction form
    2,663.45/3,995.17 = 2,659.60/x
  3. Step 3: Cross multiply
    2,663.45x = 3,995.17 × 2,659.60
  4. Step 4: Simplify right side
    2,663.45x = 10,625,520.86
  5. Step 5: Solve for x
    x = 10,625,520.86/2,663.45
  6. Step 6: Final answer
    x = 3,989.39

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.