Home / 7,143.43-10,711.21-2,211.70

Finding the Fourth Proportional to 7,143.43, 10,711.21 and 2,211.70

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Solution

The fourth proportional to 7,143.43, 10,711.21 and 2,211.70 is: 3,316.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.43 : 10,711.21 = 2,211.70 : x
  2. Step 2: Convert to fraction form
    7,143.43/10,711.21 = 2,211.70/x
  3. Step 3: Cross multiply
    7,143.43x = 10,711.21 × 2,211.70
  4. Step 4: Simplify right side
    7,143.43x = 23,689,983.16
  5. Step 5: Solve for x
    x = 23,689,983.16/7,143.43
  6. Step 6: Final answer
    x = 3,316.33

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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.