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Finding the Fourth Proportional to 1,723.87, 2,586.41 and 628.34

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Solution

The fourth proportional to 1,723.87, 2,586.41 and 628.34 is: 942.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.87 : 2,586.41 = 628.34 : x
  2. Step 2: Convert to fraction form
    1,723.87/2,586.41 = 628.34/x
  3. Step 3: Cross multiply
    1,723.87x = 2,586.41 × 628.34
  4. Step 4: Simplify right side
    1,723.87x = 1,625,144.86
  5. Step 5: Solve for x
    x = 1,625,144.86/1,723.87
  6. Step 6: Final answer
    x = 942.73

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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.