Home / 1,262.20-1,889.64-1,054.43

Finding the Fourth Proportional to 1,262.20, 1,889.64 and 1,054.43

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Solution

The fourth proportional to 1,262.20, 1,889.64 and 1,054.43 is: 1,578.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.20 : 1,889.64 = 1,054.43 : x
  2. Step 2: Convert to fraction form
    1,262.20/1,889.64 = 1,054.43/x
  3. Step 3: Cross multiply
    1,262.20x = 1,889.64 × 1,054.43
  4. Step 4: Simplify right side
    1,262.20x = 1,992,493.11
  5. Step 5: Solve for x
    x = 1,992,493.11/1,262.20
  6. Step 6: Final answer
    x = 1,578.59

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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.