Home / 3,168.12-4,372.17-1,909.58

Finding the Fourth Proportional to 3,168.12, 4,372.17 and 1,909.58

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Solution

The fourth proportional to 3,168.12, 4,372.17 and 1,909.58 is: 2,635.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.12 : 4,372.17 = 1,909.58 : x
  2. Step 2: Convert to fraction form
    3,168.12/4,372.17 = 1,909.58/x
  3. Step 3: Cross multiply
    3,168.12x = 4,372.17 × 1,909.58
  4. Step 4: Simplify right side
    3,168.12x = 8,348,986.53
  5. Step 5: Solve for x
    x = 8,348,986.53/3,168.12
  6. Step 6: Final answer
    x = 2,635.31

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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.