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Finding the Fourth Proportional to 3,877.96, 5,353.78 and 2,553.88

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Solution

The fourth proportional to 3,877.96, 5,353.78 and 2,553.88 is: 3,525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.96 : 5,353.78 = 2,553.88 : x
  2. Step 2: Convert to fraction form
    3,877.96/5,353.78 = 2,553.88/x
  3. Step 3: Cross multiply
    3,877.96x = 5,353.78 × 2,553.88
  4. Step 4: Simplify right side
    3,877.96x = 13,672,911.67
  5. Step 5: Solve for x
    x = 13,672,911.67/3,877.96
  6. Step 6: Final answer
    x = 3,525.80

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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.