Home / 8,130.29-12,195.15-3,447.29

Finding the Fourth Proportional to 8,130.29, 12,195.15 and 3,447.29

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Solution

The fourth proportional to 8,130.29, 12,195.15 and 3,447.29 is: 5,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.29 : 12,195.15 = 3,447.29 : x
  2. Step 2: Convert to fraction form
    8,130.29/12,195.15 = 3,447.29/x
  3. Step 3: Cross multiply
    8,130.29x = 12,195.15 × 3,447.29
  4. Step 4: Simplify right side
    8,130.29x = 42,040,157.67
  5. Step 5: Solve for x
    x = 42,040,157.67/8,130.29
  6. Step 6: Final answer
    x = 5,170.81

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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.