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Finding the Fourth Proportional to 1,356.60, 1,871.82 and 796.92

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Solution

The fourth proportional to 1,356.60, 1,871.82 and 796.92 is: 1,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.60 : 1,871.82 = 796.92 : x
  2. Step 2: Convert to fraction form
    1,356.60/1,871.82 = 796.92/x
  3. Step 3: Cross multiply
    1,356.60x = 1,871.82 × 796.92
  4. Step 4: Simplify right side
    1,356.60x = 1,491,690.79
  5. Step 5: Solve for x
    x = 1,491,690.79/1,356.60
  6. Step 6: Final answer
    x = 1,099.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.