Home / 3,486.72-4,785.66-3,105.12

Finding the Fourth Proportional to 3,486.72, 4,785.66 and 3,105.12

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Solution

The fourth proportional to 3,486.72, 4,785.66 and 3,105.12 is: 4,261.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.72 : 4,785.66 = 3,105.12 : x
  2. Step 2: Convert to fraction form
    3,486.72/4,785.66 = 3,105.12/x
  3. Step 3: Cross multiply
    3,486.72x = 4,785.66 × 3,105.12
  4. Step 4: Simplify right side
    3,486.72x = 14,860,048.58
  5. Step 5: Solve for x
    x = 14,860,048.58/3,486.72
  6. Step 6: Final answer
    x = 4,261.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.