Home / 2,005.12-2,767.56-1,297.75

Finding the Fourth Proportional to 2,005.12, 2,767.56 and 1,297.75

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Solution

The fourth proportional to 2,005.12, 2,767.56 and 1,297.75 is: 1,791.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.12 : 2,767.56 = 1,297.75 : x
  2. Step 2: Convert to fraction form
    2,005.12/2,767.56 = 1,297.75/x
  3. Step 3: Cross multiply
    2,005.12x = 2,767.56 × 1,297.75
  4. Step 4: Simplify right side
    2,005.12x = 3,591,600.99
  5. Step 5: Solve for x
    x = 3,591,600.99/2,005.12
  6. Step 6: Final answer
    x = 1,791.21

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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.