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Finding the Fourth Proportional to 1,793.86, 2,692.44 and 928.78

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Solution

The fourth proportional to 1,793.86, 2,692.44 and 928.78 is: 1,394.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.86 : 2,692.44 = 928.78 : x
  2. Step 2: Convert to fraction form
    1,793.86/2,692.44 = 928.78/x
  3. Step 3: Cross multiply
    1,793.86x = 2,692.44 × 928.78
  4. Step 4: Simplify right side
    1,793.86x = 2,500,684.42
  5. Step 5: Solve for x
    x = 2,500,684.42/1,793.86
  6. Step 6: Final answer
    x = 1,394.02

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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.