Home / 2,175.22-3,001.60-1,231.09

Finding the Fourth Proportional to 2,175.22, 3,001.60 and 1,231.09

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Solution

The fourth proportional to 2,175.22, 3,001.60 and 1,231.09 is: 1,698.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,175.22 : 3,001.60 = 1,231.09 : x
  2. Step 2: Convert to fraction form
    2,175.22/3,001.60 = 1,231.09/x
  3. Step 3: Cross multiply
    2,175.22x = 3,001.60 × 1,231.09
  4. Step 4: Simplify right side
    2,175.22x = 3,695,239.74
  5. Step 5: Solve for x
    x = 3,695,239.74/2,175.22
  6. Step 6: Final answer
    x = 1,698.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.