Home / 1,215.91-1,676.31-1,049.77

Finding the Fourth Proportional to 1,215.91, 1,676.31 and 1,049.77

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Solution

The fourth proportional to 1,215.91, 1,676.31 and 1,049.77 is: 1,447.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.91 : 1,676.31 = 1,049.77 : x
  2. Step 2: Convert to fraction form
    1,215.91/1,676.31 = 1,049.77/x
  3. Step 3: Cross multiply
    1,215.91x = 1,676.31 × 1,049.77
  4. Step 4: Simplify right side
    1,215.91x = 1,759,739.95
  5. Step 5: Solve for x
    x = 1,759,739.95/1,215.91
  6. Step 6: Final answer
    x = 1,447.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.