Home / 8,171.92-12,259.68-2,977.75

Finding the Fourth Proportional to 8,171.92, 12,259.68 and 2,977.75

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Solution

The fourth proportional to 8,171.92, 12,259.68 and 2,977.75 is: 4,467.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.92 : 12,259.68 = 2,977.75 : x
  2. Step 2: Convert to fraction form
    8,171.92/12,259.68 = 2,977.75/x
  3. Step 3: Cross multiply
    8,171.92x = 12,259.68 × 2,977.75
  4. Step 4: Simplify right side
    8,171.92x = 36,506,262.12
  5. Step 5: Solve for x
    x = 36,506,262.12/8,171.92
  6. Step 6: Final answer
    x = 4,467.28

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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.