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Finding the Fourth Proportional to 5,226.86, 7,212.92 and 2,868.86

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Solution

The fourth proportional to 5,226.86, 7,212.92 and 2,868.86 is: 3,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,226.86 : 7,212.92 = 2,868.86 : x
  2. Step 2: Convert to fraction form
    5,226.86/7,212.92 = 2,868.86/x
  3. Step 3: Cross multiply
    5,226.86x = 7,212.92 × 2,868.86
  4. Step 4: Simplify right side
    5,226.86x = 20,692,807.26
  5. Step 5: Solve for x
    x = 20,692,807.26/5,226.86
  6. Step 6: Final answer
    x = 3,958.94

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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.