Home / 2,138.98-3,205.22-1,445.62

Finding the Fourth Proportional to 2,138.98, 3,205.22 and 1,445.62

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Solution

The fourth proportional to 2,138.98, 3,205.22 and 1,445.62 is: 2,166.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.98 : 3,205.22 = 1,445.62 : x
  2. Step 2: Convert to fraction form
    2,138.98/3,205.22 = 1,445.62/x
  3. Step 3: Cross multiply
    2,138.98x = 3,205.22 × 1,445.62
  4. Step 4: Simplify right side
    2,138.98x = 4,633,530.14
  5. Step 5: Solve for x
    x = 4,633,530.14/2,138.98
  6. Step 6: Final answer
    x = 2,166.23

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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.