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Finding the Fourth Proportional to 2,608.95, 3,913.39 and 634.60

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Solution

The fourth proportional to 2,608.95, 3,913.39 and 634.60 is: 951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.95 : 3,913.39 = 634.60 : x
  2. Step 2: Convert to fraction form
    2,608.95/3,913.39 = 634.60/x
  3. Step 3: Cross multiply
    2,608.95x = 3,913.39 × 634.60
  4. Step 4: Simplify right side
    2,608.95x = 2,483,414.55
  5. Step 5: Solve for x
    x = 2,483,414.55/2,608.95
  6. Step 6: Final answer
    x = 951.88

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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.