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Finding the Fourth Proportional to 2,388.49, 3,296.50 and 1,393.81

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Solution

The fourth proportional to 2,388.49, 3,296.50 and 1,393.81 is: 1,923.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,388.49 : 3,296.50 = 1,393.81 : x
  2. Step 2: Convert to fraction form
    2,388.49/3,296.50 = 1,393.81/x
  3. Step 3: Cross multiply
    2,388.49x = 3,296.50 × 1,393.81
  4. Step 4: Simplify right side
    2,388.49x = 4,594,682.94
  5. Step 5: Solve for x
    x = 4,594,682.94/2,388.49
  6. Step 6: Final answer
    x = 1,923.68

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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.