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Finding the Fourth Proportional to 6,939.48, 9,576.83 and 4,108.48

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Solution

The fourth proportional to 6,939.48, 9,576.83 and 4,108.48 is: 5,669.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.48 : 9,576.83 = 4,108.48 : x
  2. Step 2: Convert to fraction form
    6,939.48/9,576.83 = 4,108.48/x
  3. Step 3: Cross multiply
    6,939.48x = 9,576.83 × 4,108.48
  4. Step 4: Simplify right side
    6,939.48x = 39,346,214.52
  5. Step 5: Solve for x
    x = 39,346,214.52/6,939.48
  6. Step 6: Final answer
    x = 5,669.91

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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.