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Finding the Fourth Proportional to 2,855.04, 3,939.92 and 1,613.04

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Solution

The fourth proportional to 2,855.04, 3,939.92 and 1,613.04 is: 2,225.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.04 : 3,939.92 = 1,613.04 : x
  2. Step 2: Convert to fraction form
    2,855.04/3,939.92 = 1,613.04/x
  3. Step 3: Cross multiply
    2,855.04x = 3,939.92 × 1,613.04
  4. Step 4: Simplify right side
    2,855.04x = 6,355,248.56
  5. Step 5: Solve for x
    x = 6,355,248.56/2,855.04
  6. Step 6: Final answer
    x = 2,225.98

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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.