Home / 3,876.22-5,350.82-2,618.98

Finding the Fourth Proportional to 3,876.22, 5,350.82 and 2,618.98

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Solution

The fourth proportional to 3,876.22, 5,350.82 and 2,618.98 is: 3,615.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.22 : 5,350.82 = 2,618.98 : x
  2. Step 2: Convert to fraction form
    3,876.22/5,350.82 = 2,618.98/x
  3. Step 3: Cross multiply
    3,876.22x = 5,350.82 × 2,618.98
  4. Step 4: Simplify right side
    3,876.22x = 14,013,690.56
  5. Step 5: Solve for x
    x = 14,013,690.56/3,876.22
  6. Step 6: Final answer
    x = 3,615.30

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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.