Home / 3,811.53-5,261.79-2,616.20

Finding the Fourth Proportional to 3,811.53, 5,261.79 and 2,616.20

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Solution

The fourth proportional to 3,811.53, 5,261.79 and 2,616.20 is: 3,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.53 : 5,261.79 = 2,616.20 : x
  2. Step 2: Convert to fraction form
    3,811.53/5,261.79 = 2,616.20/x
  3. Step 3: Cross multiply
    3,811.53x = 5,261.79 × 2,616.20
  4. Step 4: Simplify right side
    3,811.53x = 13,765,876.16
  5. Step 5: Solve for x
    x = 13,765,876.16/3,811.53
  6. Step 6: Final answer
    x = 3,611.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.