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Finding the Fourth Proportional to 3,554.41, 4,905.09 and 2,138.11

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Solution

The fourth proportional to 3,554.41, 4,905.09 and 2,138.11 is: 2,950.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.41 : 4,905.09 = 2,138.11 : x
  2. Step 2: Convert to fraction form
    3,554.41/4,905.09 = 2,138.11/x
  3. Step 3: Cross multiply
    3,554.41x = 4,905.09 × 2,138.11
  4. Step 4: Simplify right side
    3,554.41x = 10,487,621.98
  5. Step 5: Solve for x
    x = 10,487,621.98/3,554.41
  6. Step 6: Final answer
    x = 2,950.59

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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.