Home / 1,327.58-1,994.25-1,122.56

Finding the Fourth Proportional to 1,327.58, 1,994.25 and 1,122.56

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Solution

The fourth proportional to 1,327.58, 1,994.25 and 1,122.56 is: 1,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.58 : 1,994.25 = 1,122.56 : x
  2. Step 2: Convert to fraction form
    1,327.58/1,994.25 = 1,122.56/x
  3. Step 3: Cross multiply
    1,327.58x = 1,994.25 × 1,122.56
  4. Step 4: Simplify right side
    1,327.58x = 2,238,665.28
  5. Step 5: Solve for x
    x = 2,238,665.28/1,327.58
  6. Step 6: Final answer
    x = 1,686.28

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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.