Home / 7,890.92-11,835.26-3,212.96

Finding the Fourth Proportional to 7,890.92, 11,835.26 and 3,212.96

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Solution

The fourth proportional to 7,890.92, 11,835.26 and 3,212.96 is: 4,818.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.92 : 11,835.26 = 3,212.96 : x
  2. Step 2: Convert to fraction form
    7,890.92/11,835.26 = 3,212.96/x
  3. Step 3: Cross multiply
    7,890.92x = 11,835.26 × 3,212.96
  4. Step 4: Simplify right side
    7,890.92x = 38,026,230.49
  5. Step 5: Solve for x
    x = 38,026,230.49/7,890.92
  6. Step 6: Final answer
    x = 4,818.99

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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.