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Finding the Fourth Proportional to 7,272.62, 10,910.81 and 2,078.90

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Solution

The fourth proportional to 7,272.62, 10,910.81 and 2,078.90 is: 3,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,272.62 : 10,910.81 = 2,078.90 : x
  2. Step 2: Convert to fraction form
    7,272.62/10,910.81 = 2,078.90/x
  3. Step 3: Cross multiply
    7,272.62x = 10,910.81 × 2,078.90
  4. Step 4: Simplify right side
    7,272.62x = 22,682,482.91
  5. Step 5: Solve for x
    x = 22,682,482.91/7,272.62
  6. Step 6: Final answer
    x = 3,118.89

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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.