Home / 8,120.08-12,171.22-5,305.46

Finding the Fourth Proportional to 8,120.08, 12,171.22 and 5,305.46

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Solution

The fourth proportional to 8,120.08, 12,171.22 and 5,305.46 is: 7,952.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.08 : 12,171.22 = 5,305.46 : x
  2. Step 2: Convert to fraction form
    8,120.08/12,171.22 = 5,305.46/x
  3. Step 3: Cross multiply
    8,120.08x = 12,171.22 × 5,305.46
  4. Step 4: Simplify right side
    8,120.08x = 64,573,920.86
  5. Step 5: Solve for x
    x = 64,573,920.86/8,120.08
  6. Step 6: Final answer
    x = 7,952.37

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1.5x scale

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.