Home / 6,811.16-9,398.46-3,979.48

Finding the Fourth Proportional to 6,811.16, 9,398.46 and 3,979.48

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Solution

The fourth proportional to 6,811.16, 9,398.46 and 3,979.48 is: 5,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.16 : 9,398.46 = 3,979.48 : x
  2. Step 2: Convert to fraction form
    6,811.16/9,398.46 = 3,979.48/x
  3. Step 3: Cross multiply
    6,811.16x = 9,398.46 × 3,979.48
  4. Step 4: Simplify right side
    6,811.16x = 37,400,983.60
  5. Step 5: Solve for x
    x = 37,400,983.60/6,811.16
  6. Step 6: Final answer
    x = 5,491.13

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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.