Home / 3,427.12-5,133.66-2,188.72

Finding the Fourth Proportional to 3,427.12, 5,133.66 and 2,188.72

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Solution

The fourth proportional to 3,427.12, 5,133.66 and 2,188.72 is: 3,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.12 : 5,133.66 = 2,188.72 : x
  2. Step 2: Convert to fraction form
    3,427.12/5,133.66 = 2,188.72/x
  3. Step 3: Cross multiply
    3,427.12x = 5,133.66 × 2,188.72
  4. Step 4: Simplify right side
    3,427.12x = 11,236,144.32
  5. Step 5: Solve for x
    x = 11,236,144.32/3,427.12
  6. Step 6: Final answer
    x = 3,278.60

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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.