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Finding the Fourth Proportional to 3,872.76, 5,336.11 and 3,554.29

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Solution

The fourth proportional to 3,872.76, 5,336.11 and 3,554.29 is: 4,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.76 : 5,336.11 = 3,554.29 : x
  2. Step 2: Convert to fraction form
    3,872.76/5,336.11 = 3,554.29/x
  3. Step 3: Cross multiply
    3,872.76x = 5,336.11 × 3,554.29
  4. Step 4: Simplify right side
    3,872.76x = 18,966,093.52
  5. Step 5: Solve for x
    x = 18,966,093.52/3,872.76
  6. Step 6: Final answer
    x = 4,897.31

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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.