Home / 1,264.21-1,885.38-1,157.90

Finding the Fourth Proportional to 1,264.21, 1,885.38 and 1,157.90

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Solution

The fourth proportional to 1,264.21, 1,885.38 and 1,157.90 is: 1,726.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.21 : 1,885.38 = 1,157.90 : x
  2. Step 2: Convert to fraction form
    1,264.21/1,885.38 = 1,157.90/x
  3. Step 3: Cross multiply
    1,264.21x = 1,885.38 × 1,157.90
  4. Step 4: Simplify right side
    1,264.21x = 2,183,067.73
  5. Step 5: Solve for x
    x = 2,183,067.73/1,264.21
  6. Step 6: Final answer
    x = 1,726.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.