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Finding the Fourth Proportional to 2,447.82, 3,672.34 and 716.45

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Solution

The fourth proportional to 2,447.82, 3,672.34 and 716.45 is: 1,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.82 : 3,672.34 = 716.45 : x
  2. Step 2: Convert to fraction form
    2,447.82/3,672.34 = 716.45/x
  3. Step 3: Cross multiply
    2,447.82x = 3,672.34 × 716.45
  4. Step 4: Simplify right side
    2,447.82x = 2,631,027.84
  5. Step 5: Solve for x
    x = 2,631,027.84/2,447.82
  6. Step 6: Final answer
    x = 1,074.85

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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.