Home / 7,143.74-10,716.60-2,213.78

Finding the Fourth Proportional to 7,143.74, 10,716.60 and 2,213.78

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Solution

The fourth proportional to 7,143.74, 10,716.60 and 2,213.78 is: 3,320.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.74 : 10,716.60 = 2,213.78 : x
  2. Step 2: Convert to fraction form
    7,143.74/10,716.60 = 2,213.78/x
  3. Step 3: Cross multiply
    7,143.74x = 10,716.60 × 2,213.78
  4. Step 4: Simplify right side
    7,143.74x = 23,724,194.75
  5. Step 5: Solve for x
    x = 23,724,194.75/7,143.74
  6. Step 6: Final answer
    x = 3,320.98

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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.