Home / 6,521.80-9,782.28-2,821.42

Finding the Fourth Proportional to 6,521.80, 9,782.28 and 2,821.42

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Solution

The fourth proportional to 6,521.80, 9,782.28 and 2,821.42 is: 4,231.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,521.80 : 9,782.28 = 2,821.42 : x
  2. Step 2: Convert to fraction form
    6,521.80/9,782.28 = 2,821.42/x
  3. Step 3: Cross multiply
    6,521.80x = 9,782.28 × 2,821.42
  4. Step 4: Simplify right side
    6,521.80x = 27,599,920.44
  5. Step 5: Solve for x
    x = 27,599,920.44/6,521.80
  6. Step 6: Final answer
    x = 4,231.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.