Home / 9,215.20-13,821.78-3,290.82

Finding the Fourth Proportional to 9,215.20, 13,821.78 and 3,290.82

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Solution

The fourth proportional to 9,215.20, 13,821.78 and 3,290.82 is: 4,935.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,215.20 : 13,821.78 = 3,290.82 : x
  2. Step 2: Convert to fraction form
    9,215.20/13,821.78 = 3,290.82/x
  3. Step 3: Cross multiply
    9,215.20x = 13,821.78 × 3,290.82
  4. Step 4: Simplify right side
    9,215.20x = 45,484,950.57
  5. Step 5: Solve for x
    x = 45,484,950.57/9,215.20
  6. Step 6: Final answer
    x = 4,935.86

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1.5x scale

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.