Home / 3,165.72-4,367.32-2,118.12

Finding the Fourth Proportional to 3,165.72, 4,367.32 and 2,118.12

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Solution

The fourth proportional to 3,165.72, 4,367.32 and 2,118.12 is: 2,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.72 : 4,367.32 = 2,118.12 : x
  2. Step 2: Convert to fraction form
    3,165.72/4,367.32 = 2,118.12/x
  3. Step 3: Cross multiply
    3,165.72x = 4,367.32 × 2,118.12
  4. Step 4: Simplify right side
    3,165.72x = 9,250,507.84
  5. Step 5: Solve for x
    x = 9,250,507.84/3,165.72
  6. Step 6: Final answer
    x = 2,922.09

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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.