Home / 4,986.92-6,882.54-2,891.12

Finding the Fourth Proportional to 4,986.92, 6,882.54 and 2,891.12

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Solution

The fourth proportional to 4,986.92, 6,882.54 and 2,891.12 is: 3,990.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.92 : 6,882.54 = 2,891.12 : x
  2. Step 2: Convert to fraction form
    4,986.92/6,882.54 = 2,891.12/x
  3. Step 3: Cross multiply
    4,986.92x = 6,882.54 × 2,891.12
  4. Step 4: Simplify right side
    4,986.92x = 19,898,249.04
  5. Step 5: Solve for x
    x = 19,898,249.04/4,986.92
  6. Step 6: Final answer
    x = 3,990.09

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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.