Home / 4,986.48-6,882.12-2,891.28

Finding the Fourth Proportional to 4,986.48, 6,882.12 and 2,891.28

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Solution

The fourth proportional to 4,986.48, 6,882.12 and 2,891.28 is: 3,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.48 : 6,882.12 = 2,891.28 : x
  2. Step 2: Convert to fraction form
    4,986.48/6,882.12 = 2,891.28/x
  3. Step 3: Cross multiply
    4,986.48x = 6,882.12 × 2,891.28
  4. Step 4: Simplify right side
    4,986.48x = 19,898,135.91
  5. Step 5: Solve for x
    x = 19,898,135.91/4,986.48
  6. Step 6: Final answer
    x = 3,990.42

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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.