Home / 7,146.21-10,721.04-2,215.95

Finding the Fourth Proportional to 7,146.21, 10,721.04 and 2,215.95

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Solution

The fourth proportional to 7,146.21, 10,721.04 and 2,215.95 is: 3,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.21 : 10,721.04 = 2,215.95 : x
  2. Step 2: Convert to fraction form
    7,146.21/10,721.04 = 2,215.95/x
  3. Step 3: Cross multiply
    7,146.21x = 10,721.04 × 2,215.95
  4. Step 4: Simplify right side
    7,146.21x = 23,757,288.59
  5. Step 5: Solve for x
    x = 23,757,288.59/7,146.21
  6. Step 6: Final answer
    x = 3,324.46

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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.