Home / 1,426.91-2,139.55-850.19

Finding the Fourth Proportional to 1,426.91, 2,139.55 and 850.19

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Solution

The fourth proportional to 1,426.91, 2,139.55 and 850.19 is: 1,274.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.91 : 2,139.55 = 850.19 : x
  2. Step 2: Convert to fraction form
    1,426.91/2,139.55 = 850.19/x
  3. Step 3: Cross multiply
    1,426.91x = 2,139.55 × 850.19
  4. Step 4: Simplify right side
    1,426.91x = 1,819,011.19
  5. Step 5: Solve for x
    x = 1,819,011.19/1,426.91
  6. Step 6: Final answer
    x = 1,274.79

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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.