Home / 6,738.47-9,299.11-3,906.40

Finding the Fourth Proportional to 6,738.47, 9,299.11 and 3,906.40

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Solution

The fourth proportional to 6,738.47, 9,299.11 and 3,906.40 is: 5,390.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,738.47 : 9,299.11 = 3,906.40 : x
  2. Step 2: Convert to fraction form
    6,738.47/9,299.11 = 3,906.40/x
  3. Step 3: Cross multiply
    6,738.47x = 9,299.11 × 3,906.40
  4. Step 4: Simplify right side
    6,738.47x = 36,326,043.30
  5. Step 5: Solve for x
    x = 36,326,043.30/6,738.47
  6. Step 6: Final answer
    x = 5,390.84

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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.