Home / 1,613.97-2,418.79-1,328.85

Finding the Fourth Proportional to 1,613.97, 2,418.79 and 1,328.85

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Solution

The fourth proportional to 1,613.97, 2,418.79 and 1,328.85 is: 1,991.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,613.97 : 2,418.79 = 1,328.85 : x
  2. Step 2: Convert to fraction form
    1,613.97/2,418.79 = 1,328.85/x
  3. Step 3: Cross multiply
    1,613.97x = 2,418.79 × 1,328.85
  4. Step 4: Simplify right side
    1,613.97x = 3,214,209.09
  5. Step 5: Solve for x
    x = 3,214,209.09/1,613.97
  6. Step 6: Final answer
    x = 1,991.49

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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.