Home / 7,869.89-11,802.06-2,321.75

Finding the Fourth Proportional to 7,869.89, 11,802.06 and 2,321.75

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Solution

The fourth proportional to 7,869.89, 11,802.06 and 2,321.75 is: 3,481.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.89 : 11,802.06 = 2,321.75 : x
  2. Step 2: Convert to fraction form
    7,869.89/11,802.06 = 2,321.75/x
  3. Step 3: Cross multiply
    7,869.89x = 11,802.06 × 2,321.75
  4. Step 4: Simplify right side
    7,869.89x = 27,401,462.31
  5. Step 5: Solve for x
    x = 27,401,462.31/7,869.89
  6. Step 6: Final answer
    x = 3,481.81

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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.