Home / 2,872.06-3,963.79-1,613.12

Finding the Fourth Proportional to 2,872.06, 3,963.79 and 1,613.12

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Solution

The fourth proportional to 2,872.06, 3,963.79 and 1,613.12 is: 2,226.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.06 : 3,963.79 = 1,613.12 : x
  2. Step 2: Convert to fraction form
    2,872.06/3,963.79 = 1,613.12/x
  3. Step 3: Cross multiply
    2,872.06x = 3,963.79 × 1,613.12
  4. Step 4: Simplify right side
    2,872.06x = 6,394,041.04
  5. Step 5: Solve for x
    x = 6,394,041.04/2,872.06
  6. Step 6: Final answer
    x = 2,226.29

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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.