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Finding the Fourth Proportional to 6,782.98, 9,358.96 and 3,949.72

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Solution

The fourth proportional to 6,782.98, 9,358.96 and 3,949.72 is: 5,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,782.98 : 9,358.96 = 3,949.72 : x
  2. Step 2: Convert to fraction form
    6,782.98/9,358.96 = 3,949.72/x
  3. Step 3: Cross multiply
    6,782.98x = 9,358.96 × 3,949.72
  4. Step 4: Simplify right side
    6,782.98x = 36,965,271.49
  5. Step 5: Solve for x
    x = 36,965,271.49/6,782.98
  6. Step 6: Final answer
    x = 5,449.71

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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.