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Finding the Fourth Proportional to 7,992.80, 11,029.65 and 4,455.32

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Solution

The fourth proportional to 7,992.80, 11,029.65 and 4,455.32 is: 6,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.80 : 11,029.65 = 4,455.32 : x
  2. Step 2: Convert to fraction form
    7,992.80/11,029.65 = 4,455.32/x
  3. Step 3: Cross multiply
    7,992.80x = 11,029.65 × 4,455.32
  4. Step 4: Simplify right side
    7,992.80x = 49,140,620.24
  5. Step 5: Solve for x
    x = 49,140,620.24/7,992.80
  6. Step 6: Final answer
    x = 6,148.11

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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.