Home / 7,143.20-10,715.94-2,211.68

Finding the Fourth Proportional to 7,143.20, 10,715.94 and 2,211.68

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Solution

The fourth proportional to 7,143.20, 10,715.94 and 2,211.68 is: 3,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.20 : 10,715.94 = 2,211.68 : x
  2. Step 2: Convert to fraction form
    7,143.20/10,715.94 = 2,211.68/x
  3. Step 3: Cross multiply
    7,143.20x = 10,715.94 × 2,211.68
  4. Step 4: Simplify right side
    7,143.20x = 23,700,230.18
  5. Step 5: Solve for x
    x = 23,700,230.18/7,143.20
  6. Step 6: Final answer
    x = 3,317.87

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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.