Home / 1,984.53-2,738.15-1,238.85

Finding the Fourth Proportional to 1,984.53, 2,738.15 and 1,238.85

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Solution

The fourth proportional to 1,984.53, 2,738.15 and 1,238.85 is: 1,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.53 : 2,738.15 = 1,238.85 : x
  2. Step 2: Convert to fraction form
    1,984.53/2,738.15 = 1,238.85/x
  3. Step 3: Cross multiply
    1,984.53x = 2,738.15 × 1,238.85
  4. Step 4: Simplify right side
    1,984.53x = 3,392,150.93
  5. Step 5: Solve for x
    x = 3,392,150.93/1,984.53
  6. Step 6: Final answer
    x = 1,709.30

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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.