Home / 2,169.22-3,254.64-2,161.12

Finding the Fourth Proportional to 2,169.22, 3,254.64 and 2,161.12

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Solution

The fourth proportional to 2,169.22, 3,254.64 and 2,161.12 is: 3,242.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.22 : 3,254.64 = 2,161.12 : x
  2. Step 2: Convert to fraction form
    2,169.22/3,254.64 = 2,161.12/x
  3. Step 3: Cross multiply
    2,169.22x = 3,254.64 × 2,161.12
  4. Step 4: Simplify right side
    2,169.22x = 7,033,667.60
  5. Step 5: Solve for x
    x = 7,033,667.60/2,169.22
  6. Step 6: Final answer
    x = 3,242.49

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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.