Home / 7,929.05-11,890.70-2,662.49

Finding the Fourth Proportional to 7,929.05, 11,890.70 and 2,662.49

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Solution

The fourth proportional to 7,929.05, 11,890.70 and 2,662.49 is: 3,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.05 : 11,890.70 = 2,662.49 : x
  2. Step 2: Convert to fraction form
    7,929.05/11,890.70 = 2,662.49/x
  3. Step 3: Cross multiply
    7,929.05x = 11,890.70 × 2,662.49
  4. Step 4: Simplify right side
    7,929.05x = 31,658,817.05
  5. Step 5: Solve for x
    x = 31,658,817.05/7,929.05
  6. Step 6: Final answer
    x = 3,992.76

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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.