Home / 2,112.13-3,166.44-1,591.09

Finding the Fourth Proportional to 2,112.13, 3,166.44 and 1,591.09

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Solution

The fourth proportional to 2,112.13, 3,166.44 and 1,591.09 is: 2,385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.13 : 3,166.44 = 1,591.09 : x
  2. Step 2: Convert to fraction form
    2,112.13/3,166.44 = 1,591.09/x
  3. Step 3: Cross multiply
    2,112.13x = 3,166.44 × 1,591.09
  4. Step 4: Simplify right side
    2,112.13x = 5,038,103.90
  5. Step 5: Solve for x
    x = 5,038,103.90/2,112.13
  6. Step 6: Final answer
    x = 2,385.32

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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.