Home / 8,099.88-12,155.28-3,168.90

Finding the Fourth Proportional to 8,099.88, 12,155.28 and 3,168.90

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Solution

The fourth proportional to 8,099.88, 12,155.28 and 3,168.90 is: 4,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,099.88 : 12,155.28 = 3,168.90 : x
  2. Step 2: Convert to fraction form
    8,099.88/12,155.28 = 3,168.90/x
  3. Step 3: Cross multiply
    8,099.88x = 12,155.28 × 3,168.90
  4. Step 4: Simplify right side
    8,099.88x = 38,518,866.79
  5. Step 5: Solve for x
    x = 38,518,866.79/8,099.88
  6. Step 6: Final answer
    x = 4,755.49

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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.