Home / 7,766.89-11,650.74-2,221.05

Finding the Fourth Proportional to 7,766.89, 11,650.74 and 2,221.05

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Solution

The fourth proportional to 7,766.89, 11,650.74 and 2,221.05 is: 3,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,766.89 : 11,650.74 = 2,221.05 : x
  2. Step 2: Convert to fraction form
    7,766.89/11,650.74 = 2,221.05/x
  3. Step 3: Cross multiply
    7,766.89x = 11,650.74 × 2,221.05
  4. Step 4: Simplify right side
    7,766.89x = 25,876,813.14
  5. Step 5: Solve for x
    x = 25,876,813.14/7,766.89
  6. Step 6: Final answer
    x = 3,331.68

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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.