Home / 7,855.45-11,778.72-2,589.03

Finding the Fourth Proportional to 7,855.45, 11,778.72 and 2,589.03

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Solution

The fourth proportional to 7,855.45, 11,778.72 and 2,589.03 is: 3,882.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.45 : 11,778.72 = 2,589.03 : x
  2. Step 2: Convert to fraction form
    7,855.45/11,778.72 = 2,589.03/x
  3. Step 3: Cross multiply
    7,855.45x = 11,778.72 × 2,589.03
  4. Step 4: Simplify right side
    7,855.45x = 30,495,449.73
  5. Step 5: Solve for x
    x = 30,495,449.73/7,855.45
  6. Step 6: Final answer
    x = 3,882.08

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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.