Home / 9,212.34-13,821.20-2,972.21

Finding the Fourth Proportional to 9,212.34, 13,821.20 and 2,972.21

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Solution

The fourth proportional to 9,212.34, 13,821.20 and 2,972.21 is: 4,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,212.34 : 13,821.20 = 2,972.21 : x
  2. Step 2: Convert to fraction form
    9,212.34/13,821.20 = 2,972.21/x
  3. Step 3: Cross multiply
    9,212.34x = 13,821.20 × 2,972.21
  4. Step 4: Simplify right side
    9,212.34x = 41,079,508.85
  5. Step 5: Solve for x
    x = 41,079,508.85/9,212.34
  6. Step 6: Final answer
    x = 4,459.18

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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.