Home / 2,155.36-3,229.80-1,180.12

Finding the Fourth Proportional to 2,155.36, 3,229.80 and 1,180.12

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Solution

The fourth proportional to 2,155.36, 3,229.80 and 1,180.12 is: 1,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.36 : 3,229.80 = 1,180.12 : x
  2. Step 2: Convert to fraction form
    2,155.36/3,229.80 = 1,180.12/x
  3. Step 3: Cross multiply
    2,155.36x = 3,229.80 × 1,180.12
  4. Step 4: Simplify right side
    2,155.36x = 3,811,551.58
  5. Step 5: Solve for x
    x = 3,811,551.58/2,155.36
  6. Step 6: Final answer
    x = 1,768.41

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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.