Home / 7,211.62-10,817.43-3,318.76

Finding the Fourth Proportional to 7,211.62, 10,817.43 and 3,318.76

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Solution

The fourth proportional to 7,211.62, 10,817.43 and 3,318.76 is: 4,978.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.62 : 10,817.43 = 3,318.76 : x
  2. Step 2: Convert to fraction form
    7,211.62/10,817.43 = 3,318.76/x
  3. Step 3: Cross multiply
    7,211.62x = 10,817.43 × 3,318.76
  4. Step 4: Simplify right side
    7,211.62x = 35,900,453.99
  5. Step 5: Solve for x
    x = 35,900,453.99/7,211.62
  6. Step 6: Final answer
    x = 4,978.14

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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.