Home / 7,171.12-10,757.34-2,788.90

Finding the Fourth Proportional to 7,171.12, 10,757.34 and 2,788.90

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Solution

The fourth proportional to 7,171.12, 10,757.34 and 2,788.90 is: 4,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.12 : 10,757.34 = 2,788.90 : x
  2. Step 2: Convert to fraction form
    7,171.12/10,757.34 = 2,788.90/x
  3. Step 3: Cross multiply
    7,171.12x = 10,757.34 × 2,788.90
  4. Step 4: Simplify right side
    7,171.12x = 30,001,145.53
  5. Step 5: Solve for x
    x = 30,001,145.53/7,171.12
  6. Step 6: Final answer
    x = 4,183.61

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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.