Home / 8,211.09-12,288.61-6,896.19

Finding the Fourth Proportional to 8,211.09, 12,288.61 and 6,896.19

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Solution

The fourth proportional to 8,211.09, 12,288.61 and 6,896.19 is: 10,320.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.09 : 12,288.61 = 6,896.19 : x
  2. Step 2: Convert to fraction form
    8,211.09/12,288.61 = 6,896.19/x
  3. Step 3: Cross multiply
    8,211.09x = 12,288.61 × 6,896.19
  4. Step 4: Simplify right side
    8,211.09x = 84,744,589.40
  5. Step 5: Solve for x
    x = 84,744,589.40/8,211.09
  6. Step 6: Final answer
    x = 10,320.75

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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.