Home / 1,426.14-2,137.82-451.55

Finding the Fourth Proportional to 1,426.14, 2,137.82 and 451.55

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Solution

The fourth proportional to 1,426.14, 2,137.82 and 451.55 is: 676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426.14 : 2,137.82 = 451.55 : x
  2. Step 2: Convert to fraction form
    1,426.14/2,137.82 = 451.55/x
  3. Step 3: Cross multiply
    1,426.14x = 2,137.82 × 451.55
  4. Step 4: Simplify right side
    1,426.14x = 965,335.71
  5. Step 5: Solve for x
    x = 965,335.71/1,426.14
  6. Step 6: Final answer
    x = 676.89

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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.