Home / 3,518.80-5,278.20-2,419.84

Finding the Fourth Proportional to 3,518.80, 5,278.20 and 2,419.84

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Solution

The fourth proportional to 3,518.80, 5,278.20 and 2,419.84 is: 3,629.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.80 : 5,278.20 = 2,419.84 : x
  2. Step 2: Convert to fraction form
    3,518.80/5,278.20 = 2,419.84/x
  3. Step 3: Cross multiply
    3,518.80x = 5,278.20 × 2,419.84
  4. Step 4: Simplify right side
    3,518.80x = 12,772,399.49
  5. Step 5: Solve for x
    x = 12,772,399.49/3,518.80
  6. Step 6: Final answer
    x = 3,629.76

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Similar ratio
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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.