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Finding the Fourth Proportional to 3,992.60, 5,508.84 and 3,000.26

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Solution

The fourth proportional to 3,992.60, 5,508.84 and 3,000.26 is: 4,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.60 : 5,508.84 = 3,000.26 : x
  2. Step 2: Convert to fraction form
    3,992.60/5,508.84 = 3,000.26/x
  3. Step 3: Cross multiply
    3,992.60x = 5,508.84 × 3,000.26
  4. Step 4: Simplify right side
    3,992.60x = 16,527,952.30
  5. Step 5: Solve for x
    x = 16,527,952.30/3,992.60
  6. Step 6: Final answer
    x = 4,139.65

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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.