Home / 8,215.52-12,315.90-3,020.36

Finding the Fourth Proportional to 8,215.52, 12,315.90 and 3,020.36

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Solution

The fourth proportional to 8,215.52, 12,315.90 and 3,020.36 is: 4,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.52 : 12,315.90 = 3,020.36 : x
  2. Step 2: Convert to fraction form
    8,215.52/12,315.90 = 3,020.36/x
  3. Step 3: Cross multiply
    8,215.52x = 12,315.90 × 3,020.36
  4. Step 4: Simplify right side
    8,215.52x = 37,198,451.72
  5. Step 5: Solve for x
    x = 37,198,451.72/8,215.52
  6. Step 6: Final answer
    x = 4,527.83

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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.