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Finding the Fourth Proportional to 7,992.92, 11,992.84 and 4,290.83

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Solution

The fourth proportional to 7,992.92, 11,992.84 and 4,290.83 is: 6,438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.92 : 11,992.84 = 4,290.83 : x
  2. Step 2: Convert to fraction form
    7,992.92/11,992.84 = 4,290.83/x
  3. Step 3: Cross multiply
    7,992.92x = 11,992.84 × 4,290.83
  4. Step 4: Simplify right side
    7,992.92x = 51,459,196.95
  5. Step 5: Solve for x
    x = 51,459,196.95/7,992.92
  6. Step 6: Final answer
    x = 6,438.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.