Home / 6,939.20-9,576.08-4,144.80

Finding the Fourth Proportional to 6,939.20, 9,576.08 and 4,144.80

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Solution

The fourth proportional to 6,939.20, 9,576.08 and 4,144.80 is: 5,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.20 : 9,576.08 = 4,144.80 : x
  2. Step 2: Convert to fraction form
    6,939.20/9,576.08 = 4,144.80/x
  3. Step 3: Cross multiply
    6,939.20x = 9,576.08 × 4,144.80
  4. Step 4: Simplify right side
    6,939.20x = 39,690,936.38
  5. Step 5: Solve for x
    x = 39,690,936.38/6,939.20
  6. Step 6: Final answer
    x = 5,719.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.