Home / 1,421.43-2,132.42-447.59

Finding the Fourth Proportional to 1,421.43, 2,132.42 and 447.59

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Solution

The fourth proportional to 1,421.43, 2,132.42 and 447.59 is: 671.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.43 : 2,132.42 = 447.59 : x
  2. Step 2: Convert to fraction form
    1,421.43/2,132.42 = 447.59/x
  3. Step 3: Cross multiply
    1,421.43x = 2,132.42 × 447.59
  4. Step 4: Simplify right side
    1,421.43x = 954,436.97
  5. Step 5: Solve for x
    x = 954,436.97/1,421.43
  6. Step 6: Final answer
    x = 671.46

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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.