Home / 3,680.64-5,518.80-2,218.86

Finding the Fourth Proportional to 3,680.64, 5,518.80 and 2,218.86

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Solution

The fourth proportional to 3,680.64, 5,518.80 and 2,218.86 is: 3,326.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.64 : 5,518.80 = 2,218.86 : x
  2. Step 2: Convert to fraction form
    3,680.64/5,518.80 = 2,218.86/x
  3. Step 3: Cross multiply
    3,680.64x = 5,518.80 × 2,218.86
  4. Step 4: Simplify right side
    3,680.64x = 12,245,444.57
  5. Step 5: Solve for x
    x = 12,245,444.57/3,680.64
  6. Step 6: Final answer
    x = 3,326.99

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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.