Home / 9,269.82-12,780.87-6,121.02

Finding the Fourth Proportional to 9,269.82, 12,780.87 and 6,121.02

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Solution

The fourth proportional to 9,269.82, 12,780.87 and 6,121.02 is: 8,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,269.82 : 12,780.87 = 6,121.02 : x
  2. Step 2: Convert to fraction form
    9,269.82/12,780.87 = 6,121.02/x
  3. Step 3: Cross multiply
    9,269.82x = 12,780.87 × 6,121.02
  4. Step 4: Simplify right side
    9,269.82x = 78,231,960.89
  5. Step 5: Solve for x
    x = 78,231,960.89/9,269.82
  6. Step 6: Final answer
    x = 8,439.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.