Home / 5,517.15-7,611.77-3,126.78

Finding the Fourth Proportional to 5,517.15, 7,611.77 and 3,126.78

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Solution

The fourth proportional to 5,517.15, 7,611.77 and 3,126.78 is: 4,313.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,517.15 : 7,611.77 = 3,126.78 : x
  2. Step 2: Convert to fraction form
    5,517.15/7,611.77 = 3,126.78/x
  3. Step 3: Cross multiply
    5,517.15x = 7,611.77 × 3,126.78
  4. Step 4: Simplify right side
    5,517.15x = 23,800,314.57
  5. Step 5: Solve for x
    x = 23,800,314.57/5,517.15
  6. Step 6: Final answer
    x = 4,313.88

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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.