Home / 1,285.86-1,926.51-1,243.03

Finding the Fourth Proportional to 1,285.86, 1,926.51 and 1,243.03

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Solution

The fourth proportional to 1,285.86, 1,926.51 and 1,243.03 is: 1,862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.86 : 1,926.51 = 1,243.03 : x
  2. Step 2: Convert to fraction form
    1,285.86/1,926.51 = 1,243.03/x
  3. Step 3: Cross multiply
    1,285.86x = 1,926.51 × 1,243.03
  4. Step 4: Simplify right side
    1,285.86x = 2,394,709.73
  5. Step 5: Solve for x
    x = 2,394,709.73/1,285.86
  6. Step 6: Final answer
    x = 1,862.34

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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.