Home / 6,811.62-9,399.74-3,979.14

Finding the Fourth Proportional to 6,811.62, 9,399.74 and 3,979.14

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Solution

The fourth proportional to 6,811.62, 9,399.74 and 3,979.14 is: 5,491.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.62 : 9,399.74 = 3,979.14 : x
  2. Step 2: Convert to fraction form
    6,811.62/9,399.74 = 3,979.14/x
  3. Step 3: Cross multiply
    6,811.62x = 9,399.74 × 3,979.14
  4. Step 4: Simplify right side
    6,811.62x = 37,402,861.53
  5. Step 5: Solve for x
    x = 37,402,861.53/6,811.62
  6. Step 6: Final answer
    x = 5,491.04

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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.