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Finding the Fourth Proportional to 3,910.57, 5,394.57 and 2,651.20

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Solution

The fourth proportional to 3,910.57, 5,394.57 and 2,651.20 is: 3,657.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.57 : 5,394.57 = 2,651.20 : x
  2. Step 2: Convert to fraction form
    3,910.57/5,394.57 = 2,651.20/x
  3. Step 3: Cross multiply
    3,910.57x = 5,394.57 × 2,651.20
  4. Step 4: Simplify right side
    3,910.57x = 14,302,083.98
  5. Step 5: Solve for x
    x = 14,302,083.98/3,910.57
  6. Step 6: Final answer
    x = 3,657.29

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Similar ratio
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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.