Home / 1,285.15-1,922.98-1,137.73

Finding the Fourth Proportional to 1,285.15, 1,922.98 and 1,137.73

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Solution

The fourth proportional to 1,285.15, 1,922.98 and 1,137.73 is: 1,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.15 : 1,922.98 = 1,137.73 : x
  2. Step 2: Convert to fraction form
    1,285.15/1,922.98 = 1,137.73/x
  3. Step 3: Cross multiply
    1,285.15x = 1,922.98 × 1,137.73
  4. Step 4: Simplify right side
    1,285.15x = 2,187,825.21
  5. Step 5: Solve for x
    x = 2,187,825.21/1,285.15
  6. Step 6: Final answer
    x = 1,702.40

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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.