Home / 4,115.20-6,175.68-1,808.32

Finding the Fourth Proportional to 4,115.20, 6,175.68 and 1,808.32

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Solution

The fourth proportional to 4,115.20, 6,175.68 and 1,808.32 is: 2,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.20 : 6,175.68 = 1,808.32 : x
  2. Step 2: Convert to fraction form
    4,115.20/6,175.68 = 1,808.32/x
  3. Step 3: Cross multiply
    4,115.20x = 6,175.68 × 1,808.32
  4. Step 4: Simplify right side
    4,115.20x = 11,167,605.66
  5. Step 5: Solve for x
    x = 11,167,605.66/4,115.20
  6. Step 6: Final answer
    x = 2,713.75

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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.