Home / 9,310.20-12,843.80-8,249.05

Finding the Fourth Proportional to 9,310.20, 12,843.80 and 8,249.05

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Solution

The fourth proportional to 9,310.20, 12,843.80 and 8,249.05 is: 11,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,310.20 : 12,843.80 = 8,249.05 : x
  2. Step 2: Convert to fraction form
    9,310.20/12,843.80 = 8,249.05/x
  3. Step 3: Cross multiply
    9,310.20x = 12,843.80 × 8,249.05
  4. Step 4: Simplify right side
    9,310.20x = 105,949,075.04
  5. Step 5: Solve for x
    x = 105,949,075.04/9,310.20
  6. Step 6: Final answer
    x = 11,379.89

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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.