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Finding the Fourth Proportional to 5,226.40, 7,212.41 and 2,868.58

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Solution

The fourth proportional to 5,226.40, 7,212.41 and 2,868.58 is: 3,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226.40 : 7,212.41 = 2,868.58 : x
  2. Step 2: Convert to fraction form
    5,226.40/7,212.41 = 2,868.58/x
  3. Step 3: Cross multiply
    5,226.40x = 7,212.41 × 2,868.58
  4. Step 4: Simplify right side
    5,226.40x = 20,689,375.08
  5. Step 5: Solve for x
    x = 20,689,375.08/5,226.40
  6. Step 6: Final answer
    x = 3,958.63

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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.