Home / 4,006.15-5,511.72-3,896.80

Finding the Fourth Proportional to 4,006.15, 5,511.72 and 3,896.80

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Solution

The fourth proportional to 4,006.15, 5,511.72 and 3,896.80 is: 5,361.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,006.15 : 5,511.72 = 3,896.80 : x
  2. Step 2: Convert to fraction form
    4,006.15/5,511.72 = 3,896.80/x
  3. Step 3: Cross multiply
    4,006.15x = 5,511.72 × 3,896.80
  4. Step 4: Simplify right side
    4,006.15x = 21,478,070.50
  5. Step 5: Solve for x
    x = 21,478,070.50/4,006.15
  6. Step 6: Final answer
    x = 5,361.27

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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.