Home / 2,217.85-3,326.99-1,121.51

Finding the Fourth Proportional to 2,217.85, 3,326.99 and 1,121.51

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Solution

The fourth proportional to 2,217.85, 3,326.99 and 1,121.51 is: 1,682.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.85 : 3,326.99 = 1,121.51 : x
  2. Step 2: Convert to fraction form
    2,217.85/3,326.99 = 1,121.51/x
  3. Step 3: Cross multiply
    2,217.85x = 3,326.99 × 1,121.51
  4. Step 4: Simplify right side
    2,217.85x = 3,731,255.26
  5. Step 5: Solve for x
    x = 3,731,255.26/2,217.85
  6. Step 6: Final answer
    x = 1,682.38

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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.