Home / 1,425.13-2,137.82-437.92

Finding the Fourth Proportional to 1,425.13, 2,137.82 and 437.92

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Solution

The fourth proportional to 1,425.13, 2,137.82 and 437.92 is: 656.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.13 : 2,137.82 = 437.92 : x
  2. Step 2: Convert to fraction form
    1,425.13/2,137.82 = 437.92/x
  3. Step 3: Cross multiply
    1,425.13x = 2,137.82 × 437.92
  4. Step 4: Simplify right side
    1,425.13x = 936,194.13
  5. Step 5: Solve for x
    x = 936,194.13/1,425.13
  6. Step 6: Final answer
    x = 656.92

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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.