Home / 1,414.07-2,121.06-426.89

Finding the Fourth Proportional to 1,414.07, 2,121.06 and 426.89

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Solution

The fourth proportional to 1,414.07, 2,121.06 and 426.89 is: 640.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.07 : 2,121.06 = 426.89 : x
  2. Step 2: Convert to fraction form
    1,414.07/2,121.06 = 426.89/x
  3. Step 3: Cross multiply
    1,414.07x = 2,121.06 × 426.89
  4. Step 4: Simplify right side
    1,414.07x = 905,459.30
  5. Step 5: Solve for x
    x = 905,459.30/1,414.07
  6. Step 6: Final answer
    x = 640.32

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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.