Home / 6,939.52-10,396.12-4,122.40

Finding the Fourth Proportional to 6,939.52, 10,396.12 and 4,122.40

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Solution

The fourth proportional to 6,939.52, 10,396.12 and 4,122.40 is: 6,175.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.52 : 10,396.12 = 4,122.40 : x
  2. Step 2: Convert to fraction form
    6,939.52/10,396.12 = 4,122.40/x
  3. Step 3: Cross multiply
    6,939.52x = 10,396.12 × 4,122.40
  4. Step 4: Simplify right side
    6,939.52x = 42,856,965.09
  5. Step 5: Solve for x
    x = 42,856,965.09/6,939.52
  6. Step 6: Final answer
    x = 6,175.78

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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.