Home / 5,180.54-7,770.82-2,218.74

Finding the Fourth Proportional to 5,180.54, 7,770.82 and 2,218.74

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Solution

The fourth proportional to 5,180.54, 7,770.82 and 2,218.74 is: 3,328.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.54 : 7,770.82 = 2,218.74 : x
  2. Step 2: Convert to fraction form
    5,180.54/7,770.82 = 2,218.74/x
  3. Step 3: Cross multiply
    5,180.54x = 7,770.82 × 2,218.74
  4. Step 4: Simplify right side
    5,180.54x = 17,241,453.97
  5. Step 5: Solve for x
    x = 17,241,453.97/5,180.54
  6. Step 6: Final answer
    x = 3,328.12

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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.