Home / 7,874.20-11,808.78-2,608.24

Finding the Fourth Proportional to 7,874.20, 11,808.78 and 2,608.24

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Solution

The fourth proportional to 7,874.20, 11,808.78 and 2,608.24 is: 3,911.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.20 : 11,808.78 = 2,608.24 : x
  2. Step 2: Convert to fraction form
    7,874.20/11,808.78 = 2,608.24/x
  3. Step 3: Cross multiply
    7,874.20x = 11,808.78 × 2,608.24
  4. Step 4: Simplify right side
    7,874.20x = 30,800,132.35
  5. Step 5: Solve for x
    x = 30,800,132.35/7,874.20
  6. Step 6: Final answer
    x = 3,911.53

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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.