Home / 6,723.66-9,279.87-3,890.70

Finding the Fourth Proportional to 6,723.66, 9,279.87 and 3,890.70

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Solution

The fourth proportional to 6,723.66, 9,279.87 and 3,890.70 is: 5,369.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,723.66 : 9,279.87 = 3,890.70 : x
  2. Step 2: Convert to fraction form
    6,723.66/9,279.87 = 3,890.70/x
  3. Step 3: Cross multiply
    6,723.66x = 9,279.87 × 3,890.70
  4. Step 4: Simplify right side
    6,723.66x = 36,105,190.21
  5. Step 5: Solve for x
    x = 36,105,190.21/6,723.66
  6. Step 6: Final answer
    x = 5,369.87

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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.