Home / 1,984.28-2,738.40-1,238.24

Finding the Fourth Proportional to 1,984.28, 2,738.40 and 1,238.24

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Solution

The fourth proportional to 1,984.28, 2,738.40 and 1,238.24 is: 1,708.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.28 : 2,738.40 = 1,238.24 : x
  2. Step 2: Convert to fraction form
    1,984.28/2,738.40 = 1,238.24/x
  3. Step 3: Cross multiply
    1,984.28x = 2,738.40 × 1,238.24
  4. Step 4: Simplify right side
    1,984.28x = 3,390,796.42
  5. Step 5: Solve for x
    x = 3,390,796.42/1,984.28
  6. Step 6: Final answer
    x = 1,708.83

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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.