Home / 7,939.28-11,908.80-2,675.45

Finding the Fourth Proportional to 7,939.28, 11,908.80 and 2,675.45

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Solution

The fourth proportional to 7,939.28, 11,908.80 and 2,675.45 is: 4,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.28 : 11,908.80 = 2,675.45 : x
  2. Step 2: Convert to fraction form
    7,939.28/11,908.80 = 2,675.45/x
  3. Step 3: Cross multiply
    7,939.28x = 11,908.80 × 2,675.45
  4. Step 4: Simplify right side
    7,939.28x = 31,861,339.42
  5. Step 5: Solve for x
    x = 31,861,339.42/7,939.28
  6. Step 6: Final answer
    x = 4,013.13

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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.