Home / 3,168.11-4,372.16-1,909.57

Finding the Fourth Proportional to 3,168.11, 4,372.16 and 1,909.57

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Solution

The fourth proportional to 3,168.11, 4,372.16 and 1,909.57 is: 2,635.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.11 : 4,372.16 = 1,909.57 : x
  2. Step 2: Convert to fraction form
    3,168.11/4,372.16 = 1,909.57/x
  3. Step 3: Cross multiply
    3,168.11x = 4,372.16 × 1,909.57
  4. Step 4: Simplify right side
    3,168.11x = 8,348,939.41
  5. Step 5: Solve for x
    x = 8,348,939.41/3,168.11
  6. Step 6: Final answer
    x = 2,635.30

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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.