Home / 3,447.20-5,165.40-2,212.40

Finding the Fourth Proportional to 3,447.20, 5,165.40 and 2,212.40

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Solution

The fourth proportional to 3,447.20, 5,165.40 and 2,212.40 is: 3,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.20 : 5,165.40 = 2,212.40 : x
  2. Step 2: Convert to fraction form
    3,447.20/5,165.40 = 2,212.40/x
  3. Step 3: Cross multiply
    3,447.20x = 5,165.40 × 2,212.40
  4. Step 4: Simplify right side
    3,447.20x = 11,427,930.96
  5. Step 5: Solve for x
    x = 11,427,930.96/3,447.20
  6. Step 6: Final answer
    x = 3,315.13

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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.