Home / 1,256.31-1,732.68-1,226.25

Finding the Fourth Proportional to 1,256.31, 1,732.68 and 1,226.25

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Solution

The fourth proportional to 1,256.31, 1,732.68 and 1,226.25 is: 1,691.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.31 : 1,732.68 = 1,226.25 : x
  2. Step 2: Convert to fraction form
    1,256.31/1,732.68 = 1,226.25/x
  3. Step 3: Cross multiply
    1,256.31x = 1,732.68 × 1,226.25
  4. Step 4: Simplify right side
    1,256.31x = 2,124,698.85
  5. Step 5: Solve for x
    x = 2,124,698.85/1,256.31
  6. Step 6: Final answer
    x = 1,691.22

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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.