Home / 3,680.21-5,519.84-2,180.12

Finding the Fourth Proportional to 3,680.21, 5,519.84 and 2,180.12

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Solution

The fourth proportional to 3,680.21, 5,519.84 and 2,180.12 is: 3,269.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.21 : 5,519.84 = 2,180.12 : x
  2. Step 2: Convert to fraction form
    3,680.21/5,519.84 = 2,180.12/x
  3. Step 3: Cross multiply
    3,680.21x = 5,519.84 × 2,180.12
  4. Step 4: Simplify right side
    3,680.21x = 12,033,875.08
  5. Step 5: Solve for x
    x = 12,033,875.08/3,680.21
  6. Step 6: Final answer
    x = 3,269.89

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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.