Home / 2,112.08-2,914.92-1,180.40

Finding the Fourth Proportional to 2,112.08, 2,914.92 and 1,180.40

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Solution

The fourth proportional to 2,112.08, 2,914.92 and 1,180.40 is: 1,629.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.08 : 2,914.92 = 1,180.40 : x
  2. Step 2: Convert to fraction form
    2,112.08/2,914.92 = 1,180.40/x
  3. Step 3: Cross multiply
    2,112.08x = 2,914.92 × 1,180.40
  4. Step 4: Simplify right side
    2,112.08x = 3,440,771.57
  5. Step 5: Solve for x
    x = 3,440,771.57/2,112.08
  6. Step 6: Final answer
    x = 1,629.09

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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.