Home / 8,102.72-12,157.92-4,822.28

Finding the Fourth Proportional to 8,102.72, 12,157.92 and 4,822.28

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Solution

The fourth proportional to 8,102.72, 12,157.92 and 4,822.28 is: 7,235.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.72 : 12,157.92 = 4,822.28 : x
  2. Step 2: Convert to fraction form
    8,102.72/12,157.92 = 4,822.28/x
  3. Step 3: Cross multiply
    8,102.72x = 12,157.92 × 4,822.28
  4. Step 4: Simplify right side
    8,102.72x = 58,628,894.46
  5. Step 5: Solve for x
    x = 58,628,894.46/8,102.72
  6. Step 6: Final answer
    x = 7,235.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.