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Finding the Fourth Proportional to 3,915.98, 5,394.92 and 2,734.94

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Solution

The fourth proportional to 3,915.98, 5,394.92 and 2,734.94 is: 3,767.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.98 : 5,394.92 = 2,734.94 : x
  2. Step 2: Convert to fraction form
    3,915.98/5,394.92 = 2,734.94/x
  3. Step 3: Cross multiply
    3,915.98x = 5,394.92 × 2,734.94
  4. Step 4: Simplify right side
    3,915.98x = 14,754,782.50
  5. Step 5: Solve for x
    x = 14,754,782.50/3,915.98
  6. Step 6: Final answer
    x = 3,767.84

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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.