Home / 2,486.67-3,431.94-1,605.06

Finding the Fourth Proportional to 2,486.67, 3,431.94 and 1,605.06

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Solution

The fourth proportional to 2,486.67, 3,431.94 and 1,605.06 is: 2,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.67 : 3,431.94 = 1,605.06 : x
  2. Step 2: Convert to fraction form
    2,486.67/3,431.94 = 1,605.06/x
  3. Step 3: Cross multiply
    2,486.67x = 3,431.94 × 1,605.06
  4. Step 4: Simplify right side
    2,486.67x = 5,508,469.62
  5. Step 5: Solve for x
    x = 5,508,469.62/2,486.67
  6. Step 6: Final answer
    x = 2,215.20

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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.