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Finding the Fourth Proportional to 8,378.03, 11,562.61 and 5,355.94

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Solution

The fourth proportional to 8,378.03, 11,562.61 and 5,355.94 is: 7,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.03 : 11,562.61 = 5,355.94 : x
  2. Step 2: Convert to fraction form
    8,378.03/11,562.61 = 5,355.94/x
  3. Step 3: Cross multiply
    8,378.03x = 11,562.61 × 5,355.94
  4. Step 4: Simplify right side
    8,378.03x = 61,928,645.40
  5. Step 5: Solve for x
    x = 61,928,645.40/8,378.03
  6. Step 6: Final answer
    x = 7,391.79

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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.