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Finding the Fourth Proportional to 3,389.42, 4,673.22 and 2,679.86

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Solution

The fourth proportional to 3,389.42, 4,673.22 and 2,679.86 is: 3,694.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.42 : 4,673.22 = 2,679.86 : x
  2. Step 2: Convert to fraction form
    3,389.42/4,673.22 = 2,679.86/x
  3. Step 3: Cross multiply
    3,389.42x = 4,673.22 × 2,679.86
  4. Step 4: Simplify right side
    3,389.42x = 12,523,575.35
  5. Step 5: Solve for x
    x = 12,523,575.35/3,389.42
  6. Step 6: Final answer
    x = 3,694.90

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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.