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Finding the Fourth Proportional to 2,855.32, 3,940.34 and 1,613.32

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Solution

The fourth proportional to 2,855.32, 3,940.34 and 1,613.32 is: 2,226.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.32 : 3,940.34 = 1,613.32 : x
  2. Step 2: Convert to fraction form
    2,855.32/3,940.34 = 1,613.32/x
  3. Step 3: Cross multiply
    2,855.32x = 3,940.34 × 1,613.32
  4. Step 4: Simplify right side
    2,855.32x = 6,357,029.33
  5. Step 5: Solve for x
    x = 6,357,029.33/2,855.32
  6. Step 6: Final answer
    x = 2,226.38

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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.