Home / 8,138.79-12,202.29-5,499.77

Finding the Fourth Proportional to 8,138.79, 12,202.29 and 5,499.77

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Solution

The fourth proportional to 8,138.79, 12,202.29 and 5,499.77 is: 8,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.79 : 12,202.29 = 5,499.77 : x
  2. Step 2: Convert to fraction form
    8,138.79/12,202.29 = 5,499.77/x
  3. Step 3: Cross multiply
    8,138.79x = 12,202.29 × 5,499.77
  4. Step 4: Simplify right side
    8,138.79x = 67,109,727.46
  5. Step 5: Solve for x
    x = 67,109,727.46/8,138.79
  6. Step 6: Final answer
    x = 8,245.66

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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.