Home / 7,939.14-11,900.31-2,669.13

Finding the Fourth Proportional to 7,939.14, 11,900.31 and 2,669.13

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Solution

The fourth proportional to 7,939.14, 11,900.31 and 2,669.13 is: 4,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.14 : 11,900.31 = 2,669.13 : x
  2. Step 2: Convert to fraction form
    7,939.14/11,900.31 = 2,669.13/x
  3. Step 3: Cross multiply
    7,939.14x = 11,900.31 × 2,669.13
  4. Step 4: Simplify right side
    7,939.14x = 31,763,474.43
  5. Step 5: Solve for x
    x = 31,763,474.43/7,939.14
  6. Step 6: Final answer
    x = 4,000.87

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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.