Home / 8,108.16-12,154.92-4,200.72

Finding the Fourth Proportional to 8,108.16, 12,154.92 and 4,200.72

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Solution

The fourth proportional to 8,108.16, 12,154.92 and 4,200.72 is: 6,297.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.16 : 12,154.92 = 4,200.72 : x
  2. Step 2: Convert to fraction form
    8,108.16/12,154.92 = 4,200.72/x
  3. Step 3: Cross multiply
    8,108.16x = 12,154.92 × 4,200.72
  4. Step 4: Simplify right side
    8,108.16x = 51,059,415.54
  5. Step 5: Solve for x
    x = 51,059,415.54/8,108.16
  6. Step 6: Final answer
    x = 6,297.29

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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.