Home / 1,425.52-2,136.27-1,278.34

Finding the Fourth Proportional to 1,425.52, 2,136.27 and 1,278.34

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Solution

The fourth proportional to 1,425.52, 2,136.27 and 1,278.34 is: 1,915.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.52 : 2,136.27 = 1,278.34 : x
  2. Step 2: Convert to fraction form
    1,425.52/2,136.27 = 1,278.34/x
  3. Step 3: Cross multiply
    1,425.52x = 2,136.27 × 1,278.34
  4. Step 4: Simplify right side
    1,425.52x = 2,730,879.39
  5. Step 5: Solve for x
    x = 2,730,879.39/1,425.52
  6. Step 6: Final answer
    x = 1,915.71

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.