Home / 3,680.75-5,519.78-1,214.84

Finding the Fourth Proportional to 3,680.75, 5,519.78 and 1,214.84

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Solution

The fourth proportional to 3,680.75, 5,519.78 and 1,214.84 is: 1,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.75 : 5,519.78 = 1,214.84 : x
  2. Step 2: Convert to fraction form
    3,680.75/5,519.78 = 1,214.84/x
  3. Step 3: Cross multiply
    3,680.75x = 5,519.78 × 1,214.84
  4. Step 4: Simplify right side
    3,680.75x = 6,705,643.46
  5. Step 5: Solve for x
    x = 6,705,643.46/3,680.75
  6. Step 6: Final answer
    x = 1,821.81

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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.