Home / 7,769.30-11,631.09-5,131.94

Finding the Fourth Proportional to 7,769.30, 11,631.09 and 5,131.94

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Solution

The fourth proportional to 7,769.30, 11,631.09 and 5,131.94 is: 7,682.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.30 : 11,631.09 = 5,131.94 : x
  2. Step 2: Convert to fraction form
    7,769.30/11,631.09 = 5,131.94/x
  3. Step 3: Cross multiply
    7,769.30x = 11,631.09 × 5,131.94
  4. Step 4: Simplify right side
    7,769.30x = 59,690,056.01
  5. Step 5: Solve for x
    x = 59,690,056.01/7,769.30
  6. Step 6: Final answer
    x = 7,682.81

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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.