Home / 5,180.12-7,770.72-2,218.86

Finding the Fourth Proportional to 5,180.12, 7,770.72 and 2,218.86

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Solution

The fourth proportional to 5,180.12, 7,770.72 and 2,218.86 is: 3,328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.12 : 7,770.72 = 2,218.86 : x
  2. Step 2: Convert to fraction form
    5,180.12/7,770.72 = 2,218.86/x
  3. Step 3: Cross multiply
    5,180.12x = 7,770.72 × 2,218.86
  4. Step 4: Simplify right side
    5,180.12x = 17,242,139.78
  5. Step 5: Solve for x
    x = 17,242,139.78/5,180.12
  6. Step 6: Final answer
    x = 3,328.52

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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.