Home / 6,723.86-9,278.76-3,890.84

Finding the Fourth Proportional to 6,723.86, 9,278.76 and 3,890.84

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Solution

The fourth proportional to 6,723.86, 9,278.76 and 3,890.84 is: 5,369.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,723.86 : 9,278.76 = 3,890.84 : x
  2. Step 2: Convert to fraction form
    6,723.86/9,278.76 = 3,890.84/x
  3. Step 3: Cross multiply
    6,723.86x = 9,278.76 × 3,890.84
  4. Step 4: Simplify right side
    6,723.86x = 36,102,183.65
  5. Step 5: Solve for x
    x = 36,102,183.65/6,723.86
  6. Step 6: Final answer
    x = 5,369.26

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Double scale
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Similar ratio
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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.