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Finding the Fourth Proportional to 2,793.18, 4,188.78 and 818.26

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Solution

The fourth proportional to 2,793.18, 4,188.78 and 818.26 is: 1,227.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.18 : 4,188.78 = 818.26 : x
  2. Step 2: Convert to fraction form
    2,793.18/4,188.78 = 818.26/x
  3. Step 3: Cross multiply
    2,793.18x = 4,188.78 × 818.26
  4. Step 4: Simplify right side
    2,793.18x = 3,427,511.12
  5. Step 5: Solve for x
    x = 3,427,511.12/2,793.18
  6. Step 6: Final answer
    x = 1,227.10

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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.