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Finding the Fourth Proportional to 4,712.22, 7,067.12 and 1,939.68

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Solution

The fourth proportional to 4,712.22, 7,067.12 and 1,939.68 is: 2,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,712.22 : 7,067.12 = 1,939.68 : x
  2. Step 2: Convert to fraction form
    4,712.22/7,067.12 = 1,939.68/x
  3. Step 3: Cross multiply
    4,712.22x = 7,067.12 × 1,939.68
  4. Step 4: Simplify right side
    4,712.22x = 13,707,941.62
  5. Step 5: Solve for x
    x = 13,707,941.62/4,712.22
  6. Step 6: Final answer
    x = 2,909.02

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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.