Home / 8,211.43-12,295.68-7,048.81

Finding the Fourth Proportional to 8,211.43, 12,295.68 and 7,048.81

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Solution

The fourth proportional to 8,211.43, 12,295.68 and 7,048.81 is: 10,554.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.43 : 12,295.68 = 7,048.81 : x
  2. Step 2: Convert to fraction form
    8,211.43/12,295.68 = 7,048.81/x
  3. Step 3: Cross multiply
    8,211.43x = 12,295.68 × 7,048.81
  4. Step 4: Simplify right side
    8,211.43x = 86,669,912.14
  5. Step 5: Solve for x
    x = 86,669,912.14/8,211.43
  6. Step 6: Final answer
    x = 10,554.79

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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.