Home / 7,896.20-11,839.94-3,215

Finding the Fourth Proportional to 7,896.20, 11,839.94 and 3,215

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Solution

The fourth proportional to 7,896.20, 11,839.94 and 3,215 is: 4,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.20 : 11,839.94 = 3,215 : x
  2. Step 2: Convert to fraction form
    7,896.20/11,839.94 = 3,215/x
  3. Step 3: Cross multiply
    7,896.20x = 11,839.94 × 3,215
  4. Step 4: Simplify right side
    7,896.20x = 38,065,407.10
  5. Step 5: Solve for x
    x = 38,065,407.10/7,896.20
  6. Step 6: Final answer
    x = 4,820.72

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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.