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Finding the Fourth Proportional to 8,992.78, 12,406.44 and 5,454.70

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Solution

The fourth proportional to 8,992.78, 12,406.44 and 5,454.70 is: 7,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.78 : 12,406.44 = 5,454.70 : x
  2. Step 2: Convert to fraction form
    8,992.78/12,406.44 = 5,454.70/x
  3. Step 3: Cross multiply
    8,992.78x = 12,406.44 × 5,454.70
  4. Step 4: Simplify right side
    8,992.78x = 67,673,408.27
  5. Step 5: Solve for x
    x = 67,673,408.27/8,992.78
  6. Step 6: Final answer
    x = 7,525.30

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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.