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Finding the Fourth Proportional to 1,793.91, 2,691.50 and 561.63

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Solution

The fourth proportional to 1,793.91, 2,691.50 and 561.63 is: 842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.91 : 2,691.50 = 561.63 : x
  2. Step 2: Convert to fraction form
    1,793.91/2,691.50 = 561.63/x
  3. Step 3: Cross multiply
    1,793.91x = 2,691.50 × 561.63
  4. Step 4: Simplify right side
    1,793.91x = 1,511,624.34
  5. Step 5: Solve for x
    x = 1,511,624.34/1,793.91
  6. Step 6: Final answer
    x = 842.64

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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.