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Finding the Fourth Proportional to 3,776.88, 5,213.52 and 2,205

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Solution

The fourth proportional to 3,776.88, 5,213.52 and 2,205 is: 3,043.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776.88 : 5,213.52 = 2,205 : x
  2. Step 2: Convert to fraction form
    3,776.88/5,213.52 = 2,205/x
  3. Step 3: Cross multiply
    3,776.88x = 5,213.52 × 2,205
  4. Step 4: Simplify right side
    3,776.88x = 11,495,811.60
  5. Step 5: Solve for x
    x = 11,495,811.60/3,776.88
  6. Step 6: Final answer
    x = 3,043.73

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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.